@ohos.web.webview (Webview)

The Webview module provides APIs for web control. It can be used with the <Web> component, which can be used to display web pages.

NOTE

  • The initial APIs of this module are supported since API version 9. Updates will be marked with a superscript to indicate their earliest API version.

  • You can preview how the APIs of this module work on a real device. The preview is not yet available in the DevEco Studio Previewer.

Required Permissions

ohos.permission.INTERNET, required for accessing online web pages. For details about how to apply for a permission, see Declaring Permissions.

Modules to Import

import web_webview from '@ohos.web.webview';

once

once(type: string, callback: Callback<void>): void

Registers a one-time callback for web events of the specified type.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
type string Yes Web event type. The value can be "webInited", indicating completion of web initialization.
headers Callback<void> Yes Callback to register.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

web_webview.once("webInited", () => {
  console.log("setCookie")
  web_webview.WebCookieManager.setCookie("https://www.example.com", "a=b")
})

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

WebMessagePort

Implements a WebMessagePort object to send and receive messages.

close

close(): void

Closes this message port.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  msgPort: web_webview.WebMessagePort[] = null;

  build() {
    Column() {
      Button('close')
        .onClick(() => {
          if (this.msgPort && this.msgPort[1]) {
            this.msgPort[1].close();
          } else {
            console.error("msgPort is null, Please initialize first");
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

postMessageEvent

postMessageEvent(message: WebMessage): void

Sends a message. For the complete sample code, see postMessage.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
message WebMessage Yes Message to send.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100010 Can not post message using this port.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  ports: web_webview.WebMessagePort[];

  build() {
    Column() {
      Button('postMessageEvent')
        .onClick(() => {
          try {
            this.ports = this.controller.createWebMessagePorts();
            this.controller.postMessage('__init_port__', [this.ports[0]], '*');
            this.ports[1].postMessageEvent("post message from ets to html5");
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

onMessageEvent

onMessageEvent(callback: (result: WebMessage) => void): void

Registers a callback to receive messages from the HTML5 side. For the complete sample code, see postMessage.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
result WebMessage Yes Message received.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100006 Can not register message event using this port.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  ports: web_webview.WebMessagePort[];

  build() {
    Column() {
      Button('onMessageEvent')
        .onClick(() => {
          try {
            this.ports = this.controller.createWebMessagePorts();
            this.ports[1].onMessageEvent((msg) => {
              if (typeof(msg) == "string") {
                console.log("received string message from html5, string is:" + msg);
              } else if (typeof(msg) == "object") {
                if (msg instanceof ArrayBuffer) {
                  console.log("received arraybuffer from html5, length is:" + msg.byteLength);
                } else {
                  console.log("not support");
                }
              } else {
                console.log("not support");
              }
            })
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

WebviewController

Implements a WebviewController to control the behavior of the <Web> component. A WebviewController can control only one <Web> component, and the APIs (except static APIs) in the WebviewController can be invoked only after it has been bound to the target <Web> component.

initializeWebEngine

static initializeWebEngine(): void

Loads the dynamic link library (DLL) file of the web engine. This API can be called before the <Web> component is initialized to improve the startup performance.

System capability: SystemCapability.Web.Webview.Core

Example

The following code snippet exemplifies calling this API after the MainAbility is created.

// xxx.ts
import UIAbility from '@ohos.app.ability.UIAbility';
import web_webview from '@ohos.web.webview';

export default class EntryAbility extends UIAbility {
    onCreate(want, launchParam) {
        console.log("EntryAbility onCreate")
        web_webview.WebviewController.initializeWebEngine()
        globalThis.abilityWant = want
        console.log("EntryAbility onCreate done")
    }
}

Creating an Object

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

setWebDebuggingAccess

static setWebDebuggingAccess(webDebuggingAccess: boolean): void

Sets whether to enable web debugging.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
webDebuggingAccess boolean Yes Whether to enable web debugging.
// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  aboutToAppear():void {
    try {
      web_webview.WebviewController.setWebDebuggingAccess(true);
    } catch(error) {
      console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
    }
  }

  build() {
    Column() {
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

loadUrl

loadUrl(url: string | Resource, headers?: Array<WebHeader>): void

Loads a specified URL.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
url string | Resource Yes URL to load.
headers Array<WebHeader> No Additional HTTP request header of the URL.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100002 Invalid url.
17100003 Invalid resource path or file type.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('loadUrl')
        .onClick(() => {
          try {
            // The URL to be loaded is of the string type.
            this.controller.loadUrl('www.example.com');
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('loadUrl')
        .onClick(() => {
          try {
            // The headers parameter is carried.
            this.controller.loadUrl('www.example.com', [{headerKey: "headerKey", headerValue: "headerValue"}]);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

There are two methods for loading local resource files:

  1. Using $rawfile
// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('loadUrl')
        .onClick(() => {
          try {
            // The URL to be loaded is of the Resource type.
            this.controller.loadUrl($rawfile('xxx.html'));
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
  1. Using a sandbox path. For details, see the example of loading local resource files in the sandbox in Web.
<!-- xxx.html -->
<!DOCTYPE html>
<html>
  <body>
    <p>Hello World</p>
  </body>
</html>

loadData

loadData(data: string, mimeType: string, encoding: string, baseUrl?: string, historyUrl?: string): void

Loads specified data.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
data string Yes Character string obtained after being Base64 or URL encoded.
mimeType string Yes Media type (MIME).
encoding string Yes Encoding type, which can be Base64 or URL.
baseUrl string No URL (HTTP/HTTPS/data compliant), which is assigned by the <Web> component to window.origin.
historyUrl string No URL used for historical records. If this parameter is not empty, historical records are managed based on this URL. This parameter is invalid when baseUrl is left empty.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100002 Invalid url.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('loadData')
        .onClick(() => {
          try {
            this.controller.loadData(
              "<html><body bgcolor=\"white\">Source:<pre>source</pre></body></html>",
              "text/html",
              "UTF-8"
            );
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

Example of loading local resource:

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  updataContent: string = '<body><div><image src=file:///data/storage/el1/bundle/entry/resources/rawfile/xxx.png alt="image -- end" width="500" height="250"></image></div></body>'

  build() {
    Column() {
      Button('loadData')
        .onClick(() => {
          try {
            this.controller.loadData(this.updataContent, "text/html", "UTF-8", " ", " ");
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

accessForward

accessForward(): boolean

Checks whether moving to the next page can be performed on the current page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Returns true if moving to the next page can be performed on the current page; returns false otherwise.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('accessForward')
        .onClick(() => {
          try {
            let result = this.controller.accessForward();
            console.log('result:' + result);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

forward

forward(): void

Moves to the next page based on the history stack. This API is generally used together with accessForward.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('forward')
        .onClick(() => {
          try {
            this.controller.forward();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

accessBackward

accessBackward(): boolean

Checks whether moving to the previous page can be performed on the current page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Returns true if moving to the previous page can be performed on the current page; returns false otherwise.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('accessBackward')
        .onClick(() => {
          try {
            let result = this.controller.accessBackward();
            console.log('result:' + result);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

backward

backward(): void

Moves to the previous page based on the history stack. This API is generally used together with accessBackward.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('backward')
        .onClick(() => {
          try {
            this.controller.backward();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

onActive

onActive(): void

Invoked to instruct the <Web> component to enter the foreground, active state.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('onActive')
        .onClick(() => {
          try {
            this.controller.onActive();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

onInactive

onInactive(): void

Invoked to instruct the <Web> component to enter the inactive state.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('onInactive')
        .onClick(() => {
          try {
            this.controller.onInactive();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

refresh

refresh(): void

Invoked to instruct the <Web> component to refresh the web page.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('refresh')
        .onClick(() => {
          try {
            this.controller.refresh();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

accessStep

accessStep(step: number): boolean

Checks whether a specific number of steps forward or backward can be performed on the current page.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
step number Yes Number of the steps to take. A positive number means to move forward, and a negative number means to move backward.

Return value

Type Description
boolean Whether moving forward or backward is performed on the current page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State steps: number = 2;

  build() {
    Column() {
      Button('accessStep')
        .onClick(() => {
          try {
            let result = this.controller.accessStep(this.steps);
            console.log('result:' + result);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

clearHistory

clearHistory(): void

Clears the browsing history.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('clearHistory')
        .onClick(() => {
          try {
            this.controller.clearHistory();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getHitTest

getHitTest(): WebHitTestType

Obtains the element type of the area being clicked.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
WebHitTestType Element type of the area being clicked.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getHitTest')
        .onClick(() => {
          try {
            let hitTestType = this.controller.getHitTest();
            console.log("hitTestType: " + hitTestType);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

registerJavaScriptProxy

registerJavaScriptProxy(object: object, name: string, methodList: Array<string>): void

Registers a JavaScript object with the window. APIs of this object can then be invoked in the window. After this API is called, call refresh for the registration to take effect.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
object object Yes Application-side JavaScript object to be registered. Methods can be declared, but not attributes. The parameters and return values of the methods can only be of the string, number, or Boolean type.
name string Yes Name of the object to be registered, which is the same as that invoked in the window. After registration, the window can use this name to access the JavaScript object at the application side.
methodList Array<string> Yes Methods of the JavaScript object to be registered at the application side.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct Index {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  testObj = {
    test: (data) => {
      return "ArkUI Web Component";
    },
    toString: () => {
      console.log('Web Component toString');
    }
  }

  build() {
    Column() {
      Button('refresh')
        .onClick(() => {
          try {
            this.controller.refresh();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Button('Register JavaScript To Window')
        .onClick(() => {
          try {
            this.controller.registerJavaScriptProxy(this.testObj, "objName", ["test", "toString"]);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: $rawfile('index.html'), controller: this.controller })
        .javaScriptAccess(true)
    }
  }
}

runJavaScript

runJavaScript(script: string, callback : AsyncCallback<string>): void

Executes a JavaScript script. This API uses an asynchronous callback to return the script execution result. runJavaScript can be invoked only after loadUrl is executed. For example, it can be invoked in onPageEnd.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
script string Yes JavaScript script.
callback AsyncCallback<string> Yes Callback used to return the result. Returns null if the JavaScript script fails to be executed or no value is returned.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State webResult: string = ''

  build() {
    Column() {
      Text(this.webResult).fontSize(20)
      Web({ src: $rawfile('index.html'), controller: this.controller })
        .javaScriptAccess(true)
        .onPageEnd(e => {
          try {
            this.controller.runJavaScript(
              'test()',
              (error, result) => {
                if (error) {
                  console.info(`run JavaScript error: ` + JSON.stringify(error))
                  return;
                }
                if (result) {
                  this.webResult = result
                  console.info(`The test() return value is: ${result}`)
                }
              });
            console.info('url: ', e.url);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
    }
  }
}

runJavaScript

runJavaScript(script: string): Promise<string>

Executes a JavaScript script. This API uses a promise to return the script execution result. runJavaScript can be invoked only after loadUrl is executed. For example, it can be invoked in onPageEnd.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
script string Yes JavaScript script.

Return value

Type Description
Promise<string> Promise used to return the result if the operation is successful and null otherwise.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State webResult: string = '';

  build() {
    Column() {
      Text(this.webResult).fontSize(20)
      Web({ src: $rawfile('index.html'), controller: this.controller })
        .javaScriptAccess(true)
        .onPageEnd(e => {
          try {
            this.controller.runJavaScript('test()')
              .then(function (result) {
                console.log('result: ' + result);
              })
              .catch(function (error) {
                console.error("error: " + error);
              })
            console.info('url: ', e.url);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
    }
  }
}

deleteJavaScriptRegister

deleteJavaScriptRegister(name: string): void

Deletes a specific application JavaScript object that is registered with the window through registerJavaScriptProxy. The deletion takes effect immediately without invoking the refresh API.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
name string Yes Name of the registered JavaScript object, which can be used to invoke the corresponding object on the application side from the web side.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.
17100008 Cannot delete JavaScriptProxy.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State name: string = 'Object';

  build() {
    Column() {
      Button('deleteJavaScriptRegister')
        .onClick(() => {
          try {
            this.controller.deleteJavaScriptRegister(this.name);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

zoom

zoom(factor: number): void

Zooms in or out of this web page.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
factor number Yes Relative zoom ratio. A positive value indicates zoom-in, and a negative value indicates zoom-out.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.
17100004 Function not enable.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State factor: number = 1;

  build() {
    Column() {
      Button('zoom')
        .onClick(() => {
          try {
            this.controller.zoom(this.factor);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

searchAllAsync

searchAllAsync(searchString: string): void

Searches the web page for content that matches the keyword specified by 'searchString' and highlights the matches on the page. This API returns the result asynchronously through onSearchResultReceive.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
searchString string Yes Search keyword.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State searchString: string = "xxx";

  build() {
    Column() {
      Button('searchString')
        .onClick(() => {
          try {
            this.controller.searchAllAsync(this.searchString);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
        .onSearchResultReceive(ret => {
          console.log("on search result receive:" + "[cur]" + ret.activeMatchOrdinal +
          "[total]" + ret.numberOfMatches + "[isDone]" + ret.isDoneCounting);
        })
    }
  }
}

clearMatches

clearMatches(): void

Clears the matches found through searchAllAsync.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('clearMatches')
        .onClick(() => {
          try {
            this.controller.clearMatches();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

searchNext

searchNext(forward: boolean): void

Searches for and highlights the next match.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
forward boolean Yes Whether to search forward.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('searchNext')
        .onClick(() => {
          try {
            this.controller.searchNext(true);
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

clearSslCache

clearSslCache(): void

Clears the user operation corresponding to the SSL certificate error event recorded by the <Web> component.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('clearSslCache')
        .onClick(() => {
          try {
            this.controller.clearSslCache();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

clearClientAuthenticationCache

clearClientAuthenticationCache(): void

Clears the user operation corresponding to the client certificate request event recorded by the <Web> component.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('clearClientAuthenticationCache')
        .onClick(() => {
          try {
            this.controller.clearClientAuthenticationCache();
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

createWebMessagePorts

createWebMessagePorts(): Array<WebMessagePort>

Creates web message ports.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Array<WebMessagePort> List of web message ports.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
controller: web_webview.WebviewController = new web_webview.WebviewController();
ports: web_webview.WebMessagePort[];

build() {
  Column() {
    Button('createWebMessagePorts')
      .onClick(() => {
        try {
          this.ports = this.controller.createWebMessagePorts();
          console.log("createWebMessagePorts size:" + this.ports.length)
        } catch (error) {
          console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
        }
      })
    Web({ src: 'www.example.com', controller: this.controller })
  }
}
}

postMessage

postMessage(name: string, ports: Array<WebMessagePort>, uri: string): void

Sends a web message to an HTML5 window.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
name string Yes Message to send, including the data and message port.
ports Array<WebMessagePort> Yes Ports for receiving the message.
uri string Yes URI for receiving the message.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  ports: web_webview.WebMessagePort[];
  @State sendFromEts: string = 'Send this message from ets to HTML';
  @State receivedFromHtml: string = 'Display received message send from HTML';

  build() {
    Column() {
      // Display the received HTML content.
      Text(this.receivedFromHtml)
      // Send the content in the text box to an HTML window.
      TextInput({placeholder: 'Send this message from ets to HTML'})
        .onChange((value: string) => {
          this.sendFromEts = value;
      })

      Button('postMessage')
        .onClick(() => {
          try {
            // 1. Create two message ports.
            this.ports = this.controller.createWebMessagePorts();
            // 2. Register a callback on a message port (for example, port 1) on the application side.
            this.ports[1].onMessageEvent((result: web_webview.WebMessage) => {
                let msg = 'Got msg from HTML:';
                if (typeof(result) == "string") {
                  console.log("received string message from html5, string is:" + result);
                  msg = msg + result;
                } else if (typeof(result) == "object") {
                  if (result instanceof ArrayBuffer) {
                    console.log("received arraybuffer from html5, length is:" + result.byteLength);
                    msg = msg + "lenght is " + result.byteLength;
                  } else {
                    console.log("not support");
                  }
                } else {
                  console.log("not support");
                }
                this.receivedFromHtml = msg;
              })
              // 3. Send another message port (for example, port 0) to the HTML side, which can then save the port for future use.
              this.controller.postMessage('__init_port__', [this.ports[0]], '*');
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })

      // 4. Use the port on the application side to send messages to the port that has been sent to the HTML side.
      Button('SendDataToHTML')
        .onClick(() => {
          try {
            if (this.ports && this.ports[1]) {
              this.ports[1].postMessageEvent(this.sendFromEts);
            } else {
              console.error(`ports is null, Please initialize first`);
            }
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: $rawfile('xxx.html'), controller: this.controller })
    }
  }
}
<!--xxx.html-->
<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WebView Message Port Demo</title>
</head>

  <body>
    <h1>WebView Message Port Demo</h1>
    <div>
        <input type="button" value="SendToEts" onclick="PostMsgToEts(msgFromJS.value);"/><br/>
        <input id="msgFromJS" type="text" value="send this message from HTML to ets"/><br/>
    </div>
    <p class="output">display received message send from ets</p>
  </body>
  <script src="xxx.js"></script>
</html>
//xxx.js
var h5Port;
var output = document.querySelector('.output');
window.addEventListener('message', function (event) {
    if (event.data == '__init_port__') {
        if (event.ports[0] != null) {
            h5Port = event.ports[0]; // 1. Save the port number sent from the ArkTS side.
            h5Port.onmessage = function (event) {
              // 2. Receive the message sent from the ArkTS side.
              var msg = 'Got message from ets:';
              var result = event.data;
              if (typeof(result) == "string") {
                console.log("received string message from html5, string is:" + result);
                msg = msg + result;
              } else if (typeof(result) == "object") {
                if (result instanceof ArrayBuffer) {
                  console.log("received arraybuffer from html5, length is:" + result.byteLength);
                  msg = msg + "lenght is " + result.byteLength;
                } else {
                  console.log("not support");
                }
              } else {
                console.log("not support");
              }
              output.innerHTML = msg;
            }
        }
    }
})

// 3. Use h5Port to send messages to the ArkTS side.
function PostMsgToEts(data) {
    if (h5Port) {
      h5Port.postMessage(data);
    } else {
      console.error("h5Port is null, Please initialize first");
    }
}

requestFocus

requestFocus(): void

Requests focus for this web page.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('requestFocus')
        .onClick(() => {
          try {
            this.controller.requestFocus();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        });
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

zoomIn

zoomIn(): void

Zooms in on this web page by 20%.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100004 Function not enable.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('zoomIn')
        .onClick(() => {
          try {
            this.controller.zoomIn();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

zoomOut

zoomOut(): void

Zooms out of this web page by 20%.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100004 Function not enable.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('zoomOut')
        .onClick(() => {
          try {
            this.controller.zoomOut();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getHitTestValue

getHitTestValue(): HitTestValue

Obtains the element information of the area being clicked.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
HitTestValue Element information of the area being clicked.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getHitTestValue')
        .onClick(() => {
          try {
            let hitValue = this.controller.getHitTestValue();
            console.log("hitType: " + hitValue.type);
            console.log("extra: " + hitValue.extra);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getWebId

getWebId(): number

Obtains the index value of this <Web> component, which can be used for <Web> component management.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
number Index value of the current <Web> component.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getWebId')
        .onClick(() => {
          try {
            let id = this.controller.getWebId();
            console.log("id: " + id);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getUserAgent

getUserAgent(): string

Obtains the default user agent of this web page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
string Default user agent.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getUserAgent')
        .onClick(() => {
          try {
            let userAgent = this.controller.getUserAgent();
            console.log("userAgent: " + userAgent);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getTitle

getTitle(): string

Obtains the title of the current web page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
string Title of the current web page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getTitle')
        .onClick(() => {
          try {
            let title = this.controller.getTitle();
            console.log("title: " + title);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getPageHeight

getPageHeight(): number

Obtains the height of this web page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
number Height of the current web page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getPageHeight')
        .onClick(() => {
          try {
            let pageHeight = this.controller.getPageHeight();
            console.log("pageHeight : " + pageHeight);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

storeWebArchive

storeWebArchive(baseName: string, autoName: boolean, callback: AsyncCallback<string>): void

Stores this web page. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
baseName string Yes Save path. The value cannot be null.
autoName boolean Yes Whether to automatically generate a file name. The value false means not to automatically generate a file name. The value true means to automatically generate a file name based on the URL of the current page and the baseName value. In this case, baseName is regarded as a directory.
callback AsyncCallback<string> Yes Callback used to return the save path if the operation is successful and null otherwise.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100003 Invalid resource path or file type.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('storeWebArchive')
        .onClick(() => {
          try {
            this.controller.storeWebArchive("/data/storage/el2/base/", true, (error, filename) => {
              if (error) {
                console.info(`save web archive error: ` + JSON.stringify(error))
                return;
              }
              if (filename != null) {
                console.info(`save web archive success: ${filename}`)
              }
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

storeWebArchive

storeWebArchive(baseName: string, autoName: boolean): Promise<string>

Stores this web page. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
baseName string Yes Save path. The value cannot be null.
autoName boolean Yes Whether to automatically generate a file name. The value false means not to automatically generate a file name. The value true means to automatically generate a file name based on the URL of the current page and the baseName value. In this case, baseName is regarded as a directory.

Return value

Type Description
Promise<string> Promise used to return the save path if the operation is successful and null otherwise.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.
17100003 Invalid resource path or file type.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('storeWebArchive')
        .onClick(() => {
          try {
            this.controller.storeWebArchive("/data/storage/el2/base/", true)
              .then(filename => {
                if (filename != null) {
                  console.info(`save web archive success: ${filename}`)
                }
              })
              .catch(error => {
                console.log('error: ' + JSON.stringify(error));
              })
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getUrl

getUrl(): string

Obtains the URL of this page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
string URL of the current page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getUrl')
        .onClick(() => {
          try {
            let url = this.controller.getUrl();
            console.log("url: " + url);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

stop

stop(): void

Stops page loading.

System capability: SystemCapability.Web.Webview.Core

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('stop')
        .onClick(() => {
          try {
            this.controller.stop();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        });
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

backOrForward

backOrForward(step: number): void

Performs a specific number of steps forward or backward on the current page based on the history stack. No redirection will be performed if the corresponding page does not exist in the history stack.

Because the previously loaded web pages are used for the operation, no page reloading is involved.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
step number Yes Number of the steps to take.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State step: number = -2;

  build() {
    Column() {
      Button('backOrForward')
        .onClick(() => {
          try {
            this.controller.backOrForward(this.step);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

scrollTo

scrollTo(x:number, y:number): void

Scrolls the page to the specified absolute position.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
x number Yes X coordinate of the absolute position. If the value is a negative number, the value 0 is used.
y number Yes Y coordinate of the absolute position. If the value is a negative number, the value 0 is used.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('scrollTo')
        .onClick(() => {
          try {
            this.controller.scrollTo(50, 50);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
<!--xxx.html-->
<!DOCTYPE html>
<html>
<head>
    <title>Demo</title>
    <style>
        body {
            width:3000px;
            height:3000px;
            padding-right:170px;
            padding-left:170px;
            border:5px solid blueviolet
        }
    </style>
</head>
<body>
Scroll Test
</body>
</html>

scrollBy

scrollBy(deltaX:number, deltaY:number): void

Scrolls the page by the specified amount.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
deltaX number Yes Amount to scroll by along the x-axis. The positive direction is rightward.
deltaY number Yes Amount to scroll by along the y-axis. The positive direction is downward.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('scrollBy')
        .onClick(() => {
          try {
            this.controller.scrollBy(50, 50);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
<!--xxx.html-->
<!DOCTYPE html>
<html>
<head>
    <title>Demo</title>
    <style>
        body {
            width:3000px;
            height:3000px;
            padding-right:170px;
            padding-left:170px;
            border:5px solid blueviolet
        }
    </style>
</head>
<body>
Scroll Test
</body>
</html>

slideScroll

slideScroll(vx:number, vy:number): void

Simulates a slide-to-scroll action on the page at the specified velocity.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
vx number Yes Horizontal velocity component of the slide-to-scroll action, where the positive direction is rightward.
vy number Yes Vertical velocity component of the slide-to-scroll action, where the positive direction is downward.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('slideScroll')
        .onClick(() => {
          try {
            this.controller.slideScroll(500, 500);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
<!--xxx.html-->
<!DOCTYPE html>
<html>
<head>
    <title>Demo</title>
    <style>
        body {
            width:3000px;
            height:3000px;
            padding-right:170px;
            padding-left:170px;
            border:5px solid blueviolet
        }
    </style>
</head>
<body>
Scroll Test
</body>
</html>

getOriginalUrl

getOriginalUrl(): string

Obtains the original URL of this page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
string Original URL of the current page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getOrgUrl')
        .onClick(() => {
          try {
            let url = this.controller.getOriginalUrl();
            console.log("original url: " + url);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getFavicon

getFavicon(): image.PixelMap

Obtains the favicon of this page.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
PixelMap PixelMap object of the favicon of the page.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';
import image from "@ohos.multimedia.image"
@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
    @State pixelmap: image.PixelMap = undefined;

  build() {
    Column() {
      Button('getFavicon')
        .onClick(() => {
          try {
            this.pixelmap = this.controller.getFavicon();
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

setNetworkAvailable

setNetworkAvailable(enable: boolean): void

Sets the window.navigator.onLine attribute in JavaScript.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
enable boolean Yes Whether to enable window.navigator.onLine.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('setNetworkAvailable')
        .onClick(() => {
          try {
            this.controller.setNetworkAvailable(true);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

hasImage

hasImage(callback: AsyncCallback<boolean>): void

Checks whether this page contains images. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<boolean> Yes Callback used to return the result.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('hasImageCb')
        .onClick(() => {
          try {
            this.controller.hasImage((error, data) => {
                if (error) {
                  console.info(`hasImage error: ` + JSON.stringify(error))
                  return;
                }
                console.info("hasImage: " + data);
              });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

hasImage

hasImage(): Promise<boolean>

Checks whether this page contains images. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Promise<boolean> Promise used to return the result.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web compoent.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('hasImagePm')
        .onClick(() => {
          try {
            this.controller.hasImage().then((data) => {
                console.info('hasImage: ' + data);
              })
              .catch(function (error) {
                console.error("error: " + error);
              })
          } catch (error) {
            console.error(`Errorcode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

removeCache

removeCache(clearRom: boolean): void

Clears the cache in the application. This API will clear the cache for all webviews in the same application.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
clearRom boolean Yes Whether to clear the cache in the ROM and RAM at the same time. The value true means to clear the cache in the ROM and RAM at the same time, and false means to only clear the cache in the RAM.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('removeCache')
        .onClick(() => {
          try {
            this.controller.removeCache(false);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

pageUp

pageUp(top:boolean): void

Scrolls the page up by half the view port or jumps to the top of the page.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
top boolean Yes Whether to jump to the top of the page. The value true means to jump to the top of the page; and false means to scroll the page up by half the view port.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('pageUp')
        .onClick(() => {
          try {
            this.controller.pageUp(false);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

pageDown

pageDown(bottom:boolean): void

Scrolls the page down by half the view port or jumps to the bottom of the page.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
bottom boolean Yes Whether to jump to the bottom of the page. The value true means to jump to the bottom of the page; and false means to scroll the page down by half the view port.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('pageDown')
        .onClick(() => {
          try {
            this.controller.pageDown(false);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getBackForwardEntries

getBackForwardEntries(): BackForwardList

Obtains the historical information list of the current webview.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
BackForwardList Historical information list of the current webview.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getBackForwardEntries')
        .onClick(() => {
          try {
            let list = this.controller.getBackForwardEntries()
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

serializeWebState

serializeWebState(): Uint8Array

Serializes the page status history of the current Webview.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Uint8Array Serialized data of the page status history of the current WebView.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

  1. To perform operations on files, you must import the file management module. For details, see File Management.
// xxx.ets
import web_webview from '@ohos.web.webview';
import fs from '@ohos.file.fs';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('serializeWebState')
        .onClick(() => {
          try {
            let state = this.controller.serializeWebState();
            // Obtain the value of globalThis.cacheDir from MainAbility.ts.
            let path = globalThis.cacheDir;
            path += '/WebState';
            // Synchronously open a file.
            let file = fs.openSync(path, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
            fs.writeSync(file.fd, state.buffer);
            fs.closeSync(file.fd);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
  1. Modify MainAbility.ts. Obtain the path of the application cache file.
// xxx.ts
import UIAbility from '@ohos.app.ability.UIAbility';
import web_webview from '@ohos.web.webview';

export default class MainAbility extends UIAbility {
    onCreate(want, launchParam) {
        // Bind cacheDir to the globalThis object to implement data synchronization between the UIAbility component and the page.
        globalThis.cacheDir = this.context.cacheDir;
    }
}

restoreWebState

restoreWebState(state: Uint8Array): void

Restores the page status history from the serialized data of the current WebView.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
state Uint8Array Yes Serialized data of the page status history.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100001 Init error. The WebviewController must be associated with a Web component.

Example

  1. To perform operations on files, you must import the file management module. For details, see File Management.
// xxx.ets
import web_webview from '@ohos.web.webview';
import fs from '@ohos.file.fs';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('RestoreWebState')
        .onClick(() => {
          try {
            // Obtain the value of globalThis.cacheDir from MainAbility.ts.
            let path = globalThis.cacheDir;
            path += '/WebState';
            // Synchronously open a file.
            let file = fs.openSync(path, fs.OpenMode.READ_WRITE);
            let stat = fs.statSync(path);
            let size = stat.size;
            let buf = new ArrayBuffer(size);
            fs.read(file.fd, buf, (err, readLen) => {
              if (err) {
                console.info("mkdir failed with error message: " + err.message + ", error code: " + err.code);
              } else {
                console.info("read file data succeed");
                this.controller.restoreWebState(new Uint8Array(buf.slice(0, readLen)));
                fs.closeSync(file);
              }
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}
  1. Modify MainAbility.ts. Obtain the path of the application cache file.
// xxx.ts
import UIAbility from '@ohos.app.ability.UIAbility';
import web_webview from '@ohos.web.webview';

export default class MainAbility extends UIAbility {
    onCreate(want, launchParam) {
        // Bind cacheDir to the globalThis object to implement data synchronization between the UIAbility component and the page.
        globalThis.cacheDir = this.context.cacheDir;
    }
}

customizeSchemes

static customizeSchemes(schemes: Array<WebCustomScheme>): void

Customizes the URL schemes (also known as protocols). It is recommended that this API be called before any <Web> component is initialized.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
schemes Array<WebCustomScheme> Yes Array of up to 10 custom schemes.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  responseweb: WebResourceResponse = new WebResourceResponse()
  scheme1: web_webview.WebCustomScheme = {schemeName: "name1", isSupportCORS: true, isSupportFetch: true}
  scheme2: web_webview.WebCustomScheme = {schemeName: "name2", isSupportCORS: true, isSupportFetch: true}
  scheme3: web_webview.WebCustomScheme = {schemeName: "name3", isSupportCORS: true, isSupportFetch: true}

  aboutToAppear():void {
    try {
      web_webview.WebviewController.customizeSchemes([this.scheme1, this.scheme2, this.scheme3])
    } catch(error) {
      console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
    }
  }

  build() {
    Column() {
      Web({ src: 'www.example.com', controller: this.controller })
        .onInterceptRequest((event) => {
          console.log('url:' + event.request.getRequestUrl())
          return this.responseweb
        })
    }
  }
}

WebCookieManager

Implements a WebCookieManager instance to manage behavior of cookies in <Web> components. All <Web> components in an application share a WebCookieManager instance.

getCookie

static getCookie(url: string): string

Obtains the cookie corresponding to the specified URL.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
url string Yes URL of the cookie to obtain. A complete URL is recommended.

Return value

Type Description
string Cookie value corresponding to the specified URL.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100002 Invalid url.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getCookie')
        .onClick(() => {
          try {
            let value = web_webview.WebCookieManager.getCookie('https://www.example.com');
            console.log("value: " + value);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

setCookie

static setCookie(url: string, value: string): void

Sets a cookie for the specified URL.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
url string Yes URL of the cookie to set. A complete URL is recommended.
value string Yes Cookie value to set.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100002 Invalid url.
17100005 Invalid cookie value.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('setCookie')
        .onClick(() => {
          try {
            web_webview.WebCookieManager.setCookie('https://www.example.com', 'a=b');
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

saveCookieAsync

static saveCookieAsync(callback: AsyncCallback<void>): void

Saves the cookies in the memory to the drive. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<void> Yes Callback used to return the operation result.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('saveCookieAsync')
        .onClick(() => {
          try {
            web_webview.WebCookieManager.saveCookieAsync((error) => {
              if (error) {
                console.log("error: " + error);
              }
            })
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

saveCookieAsync

static saveCookieAsync(): Promise<void>

Saves the cookies in the memory to the drive. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Promise<void> Promise used to return the operation result.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('saveCookieAsync')
        .onClick(() => {
          try {
            web_webview.WebCookieManager.saveCookieAsync()
              .then(() => {
                console.log("saveCookieAsyncCallback success!");
              })
              .catch((error) => {
                console.error("error: " + error);
              });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

putAcceptCookieEnabled

static putAcceptCookieEnabled(accept: boolean): void

Sets whether the WebCookieManager instance has the permission to send and receive cookies.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
accept boolean Yes Whether the WebCookieManager instance has the permission to send and receive cookies.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('putAcceptCookieEnabled')
        .onClick(() => {
          try {
            web_webview.WebCookieManager.putAcceptCookieEnabled(false);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

isCookieAllowed

static isCookieAllowed(): boolean

Checks whether the WebCookieManager instance has the permission to send and receive cookies.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Whether the WebCookieManager instance has the permission to send and receive cookies. The default value is true.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('isCookieAllowed')
        .onClick(() => {
          let result = web_webview.WebCookieManager.isCookieAllowed();
          console.log("result: " + result);
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

putAcceptThirdPartyCookieEnabled

static putAcceptThirdPartyCookieEnabled(accept: boolean): void

Sets whether the WebCookieManager instance has the permission to send and receive third-party cookies.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
accept boolean Yes Whether the WebCookieManager instance has the permission to send and receive third-party cookies.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('putAcceptThirdPartyCookieEnabled')
        .onClick(() => {
          try {
            web_webview.WebCookieManager.putAcceptThirdPartyCookieEnabled(false);
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

isThirdPartyCookieAllowed

static isThirdPartyCookieAllowed(): boolean

Checks whether the WebCookieManager instance has the permission to send and receive third-party cookies.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Whether the WebCookieManager instance has the permission to send and receive third-party cookies. The default value is false.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('isThirdPartyCookieAllowed')
        .onClick(() => {
          let result = web_webview.WebCookieManager.isThirdPartyCookieAllowed();
          console.log("result: " + result);
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

existCookie

static existCookie(): boolean

Checks whether cookies exist.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Whether cookies exist.

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('existCookie')
        .onClick(() => {
          let result = web_webview.WebCookieManager.existCookie();
          console.log("result: " + result);
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

deleteEntireCookie

static deleteEntireCookie(): void

Deletes all cookies.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('deleteEntireCookie')
        .onClick(() => {
          web_webview.WebCookieManager.deleteEntireCookie();
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

deleteSessionCookie

static deleteSessionCookie(): void

Deletes all session cookies.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview'

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('deleteSessionCookie')
        .onClick(() => {
          web_webview.WebCookieManager.deleteSessionCookie();
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

WebStorage

Implements a WebStorage object to manage the Web SQL database and HTML5 Web Storage APIs. All <Web> components in an application share a WebStorage object.

deleteOrigin

static deleteOrigin(origin : string): void

Deletes all data in the specified origin.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin, which is obtained through getOrigins.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('deleteOrigin')
        .onClick(() => {
          try {
            web_webview.WebStorage.deleteOrigin(this.origin);
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOrigins

static getOrigins(callback: AsyncCallback<Array<WebStorageOrigin>>) : void

Obtains information about all origins that are currently using the Web SQL Database. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<Array<WebStorageOrigin>> Yes Callback used to return the information about the origins. For details, see WebStorageOrigin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100012 Invalid web storage origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getOrigins')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOrigins((error, origins) => {
              if (error) {
                console.log('error: ' + JSON.stringify(error));
                return;
              }
              for (let i = 0; i < origins.length; i++) {
                console.log('origin: ' + origins[i].origin);
                console.log('usage: ' + origins[i].usage);
                console.log('quota: ' + origins[i].quota);
              }
            })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOrigins

static getOrigins() : Promise<Array<WebStorageOrigin>>

Obtains information about all origins that are currently using the Web SQL Database. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Promise<Array<WebStorageOrigin>> Promise used to return the information about the origins. For details, see WebStorageOrigin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100012 Invalid web storage origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getOrigins')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOrigins()
              .then(origins => {
                for (let i = 0; i < origins.length; i++) {
                  console.log('origin: ' + origins[i].origin);
                  console.log('usage: ' + origins[i].usage);
                  console.log('quota: ' + origins[i].quota);
                }
              })
              .catch(e => {
                console.log('error: ' + JSON.stringify(e));
              })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOriginQuota

static getOriginQuota(origin : string, callback : AsyncCallback<number>) : void

Obtains the storage quota of an origin in the Web SQL Database, in bytes. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.
callback AsyncCallback<number> Yes Storage quota of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getOriginQuota')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOriginQuota(this.origin, (error, quota) => {
              if (error) {
                console.log('error: ' + JSON.stringify(error));
                return;
              }
              console.log('quota: ' + quota);
            })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOriginQuota

static getOriginQuota(origin : string) : Promise<number>

Obtains the storage quota of an origin in the Web SQL Database, in bytes. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.

Return value

Type Description
Promise<number> Promise used to return the storage quota of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getOriginQuota')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOriginQuota(this.origin)
              .then(quota => {
                console.log('quota: ' + quota);
              })
              .catch(e => {
                console.log('error: ' + JSON.stringify(e));
              })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOriginUsage

static getOriginUsage(origin : string, callback : AsyncCallback<number>) : void

Obtains the storage usage of an origin in the Web SQL Database, in bytes. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.
callback AsyncCallback<number> Yes Storage usage of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getOriginUsage')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOriginUsage(this.origin, (error, usage) => {
              if (error) {
                console.log('error: ' + JSON.stringify(error));
                return;
              }
              console.log('usage: ' + usage);
            })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

getOriginUsage

static getOriginUsage(origin : string) : Promise<number>

Obtains the storage usage of an origin in the Web SQL Database, in bytes. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.

Return value

Type Description
Promise<number> Promise used to return the storage usage of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getOriginUsage')
        .onClick(() => {
          try {
            web_webview.WebStorage.getOriginUsage(this.origin)
              .then(usage => {
                console.log('usage: ' + usage);
              })
              .catch(e => {
                console.log('error: ' + JSON.stringify(e));
              })
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }

        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

deleteAllData

static deleteAllData(): void

Deletes all data in the Web SQL Database.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('deleteAllData')
        .onClick(() => {
          try {
            web_webview.WebStorage.deleteAllData();
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
        .databaseAccess(true)
    }
  }
}

WebDataBase

Implements a WebDataBase object.

getHttpAuthCredentials

static getHttpAuthCredentials(host: string, realm: string): Array<string>

Retrieves HTTP authentication credentials for a given host and realm. This API returns the result synchronously.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
host string Yes Host to which HTTP authentication credentials apply.
realm string Yes Realm to which HTTP authentication credentials apply.

Return value

Type Description
Array<string> Returns the array of the matching user names and passwords if the operation is successful; returns an empty array otherwise.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  host: string = "www.spincast.org";
  realm: string = "protected example";
  username_password: string[];

  build() {
    Column() {
      Button('getHttpAuthCredentials')
        .onClick(() => {
          try {
            this.username_password = web_webview.WebDataBase.getHttpAuthCredentials(this.host, this.realm);
            console.log('num: ' + this.username_password.length);
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

saveHttpAuthCredentials

static saveHttpAuthCredentials(host: string, realm: string, username: string, password: string): void

Saves HTTP authentication credentials for a given host and realm. This API returns the result synchronously.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
host string Yes Host to which HTTP authentication credentials apply.
realm string Yes Realm to which HTTP authentication credentials apply.
username string Yes User name.
password string Yes Password.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  host: string = "www.spincast.org";
  realm: string = "protected example";

  build() {
    Column() {
      Button('saveHttpAuthCredentials')
        .onClick(() => {
          try {
            web_webview.WebDataBase.saveHttpAuthCredentials(this.host, this.realm, "Stromgol", "Laroche");
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

existHttpAuthCredentials

static existHttpAuthCredentials(): boolean

Checks whether any saved HTTP authentication credentials exist. This API returns the result synchronously.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
boolean Whether any saved HTTP authentication credentials exist. Returns true if any saved HTTP authentication credentials exist; returns false otherwise.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('existHttpAuthCredentials')
        .onClick(() => {
          try {
            let result = web_webview.WebDataBase.existHttpAuthCredentials();
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

deleteHttpAuthCredentials

static deleteHttpAuthCredentials(): void

Deletes all HTTP authentication credentials saved in the cache. This API returns the result synchronously.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('deleteHttpAuthCredentials')
        .onClick(() => {
          try {
            web_webview.WebDataBase.deleteHttpAuthCredentials();
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

GeolocationPermissions

Implements a GeolocationPermissions object.

Required Permissions

ohos.permission.LOCATION, ohos.permission.APPROXIMATELY_LOCATION, and ohos.permission.LOCATION_IN_BACKGROUND, which are required for accessing the location information. For details about the permissions, see @ohos.geolocation (Geolocation).

allowGeolocation

static allowGeolocation(origin: string): void

Allows the specified origin to use the geolocation information.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('allowGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.allowGeolocation(this.origin);
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

deleteGeolocation

static deleteGeolocation(origin: string): void

Clears the geolocation permission status of a specified origin.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('deleteGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.deleteGeolocation(this.origin);
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getAccessibleGeolocation

static getAccessibleGeolocation(origin: string, callback: AsyncCallback<boolean>): void

Obtains the geolocation permission status of the specified origin. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.
callback AsyncCallback<boolean> Yes Callback used to return the geolocation permission status of the specified origin. If the operation is successful, the value true means that the geolocation permission is granted, and false means the opposite. If the operation fails, the geolocation permission status of the specified origin is not found.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getAccessibleGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.getAccessibleGeolocation(this.origin, (error, result) => {
              if (error) {
                console.log('getAccessibleGeolocationAsync error: ' + JSON.stringify(error));
                return;
              }
              console.log('getAccessibleGeolocationAsync result: ' + result);
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getAccessibleGeolocation

static getAccessibleGeolocation(origin: string): Promise<boolean>

Obtains the geolocation permission status of the specified origin. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
origin string Yes Index of the origin.

Return value

Type Description
Promise<boolean> Promise used to return the geolocation permission status of the specified origin. If the operation is successful, the value true means that the geolocation permission is granted, and false means the opposite. If the operation fails, the geolocation permission status of the specified origin is not found.

Error codes

For details about the error codes, see Webview Error Codes.

ID Error Message
17100011 Invalid origin.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  origin: string = "file:///";

  build() {
    Column() {
      Button('getAccessibleGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.getAccessibleGeolocation(this.origin)
              .then(result => {
                console.log('getAccessibleGeolocationPromise result: ' + result);
              }).catch(error => {
              console.log('getAccessibleGeolocationPromise error: ' + JSON.stringify(error));
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getStoredGeolocation

static getStoredGeolocation(callback: AsyncCallback<Array<string>>): void

Obtains the geolocation permission status of all origins. This API uses an asynchronous callback to return the result.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
callback AsyncCallback<Array<string>> Yes Callback used to return the geolocation permission status of all origins.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getStoredGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.getStoredGeolocation((error, origins) => {
              if (error) {
                console.log('getStoredGeolocationAsync error: ' + JSON.stringify(error));
                return;
              }
              let origins_str: string = origins.join();
              console.log('getStoredGeolocationAsync origins: ' + origins_str);
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

getStoredGeolocation

static getStoredGeolocation(): Promise<Array<string>>

Obtains the geolocation permission status of all origins. This API uses a promise to return the result.

System capability: SystemCapability.Web.Webview.Core

Return value

Type Description
Promise<Array<string>> Promise used to return the geolocation permission status of all origins.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('getStoredGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.getStoredGeolocation()
              .then(origins => {
                let origins_str: string = origins.join();
                console.log('getStoredGeolocationPromise origins: ' + origins_str);
              }).catch(error => {
              console.log('getStoredGeolocationPromise error: ' + JSON.stringify(error));
            });
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

deleteAllGeolocation

static deleteAllGeolocation(): void

Clears the geolocation permission status of all sources.

System capability: SystemCapability.Web.Webview.Core

Example

// xxx.ets
import web_webview from '@ohos.web.webview';

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();

  build() {
    Column() {
      Button('deleteAllGeolocation')
        .onClick(() => {
          try {
            web_webview.GeolocationPermissions.deleteAllGeolocation();
          } catch (error) {
            console.error(`ErrorCode: ${error.code}, Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

WebHeader

Describes the request/response header returned by the <Web> component.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
headerKey string Yes Yes Key of the request/response header.
headerValue string Yes Yes Value of the request/response header.

WebHitTestType

System capability: SystemCapability.Web.Webview.Core

Name Value Description
EditText 0 Editable area.
Email 1 Email address.
HttpAnchor 2 Hyperlink whose src is http.
HttpAnchorImg 3 Image with a hyperlink, where src is http.
Img 4 HTML::img tag.
Map 5 Geographical address.
Phone 6 Phone number.
Unknown 7 Unknown content.

HitTestValue

Provides the element information of the area being clicked. For details about the sample code, see getHitTestValue.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
type WebHitTestType Yes No Element type of the area being clicked.
extra string Yes No Extra information of the area being clicked. If the area being clicked is an image or a link, the extra information is the URL of the image or link.

WebMessage

Describes the data types supported for WebMessagePort.

System capability: SystemCapability.Web.Webview.Core

Type Description
string String type.
ArrayBuffer Binary type.

WebStorageOrigin

Provides usage information of the Web SQL Database.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
origin string Yes No Index of the origin.
usage number Yes No Storage usage of the origin.
quota number Yes No Storage quota of the origin.

BackForwardList

Provides the historical information list of the current webview.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
currentIndex number Yes No Index of the current page in the page history stack.
size number Yes No Number of indexes in the history stack. The maximum value is 50. If this value is exceeded, the earliest index will be overwritten.

getItemAtIndex

getItemAtIndex(index: number): HistoryItem

Obtains the page record with the specified index in the history stack.

System capability: SystemCapability.Web.Webview.Core

Parameters

Name Type Mandatory Description
index number Yes Index of the target page record in the history stack.

Return value

Type Description
HistoryItem Historical page record.

Example

// xxx.ets
import web_webview from '@ohos.web.webview';
import image from "@ohos.multimedia.image"

@Entry
@Component
struct WebComponent {
  controller: web_webview.WebviewController = new web_webview.WebviewController();
  @State icon: image.PixelMap = undefined;

  build() {
    Column() {
      Button('getBackForwardEntries')
        .onClick(() => {
          try {
            let list = this.controller.getBackForwardEntries();
            let historyItem = list.getItemAtIndex(list.currentIndex);
            console.log("HistoryItem: " + JSON.stringify(historyItem));
            this.icon = historyItem.icon;
          } catch (error) {
            console.error(`ErrorCode: ${error.code},  Message: ${error.message}`);
          }
        })
      Web({ src: 'www.example.com', controller: this.controller })
    }
  }
}

HistoryItem

Describes a historical page record.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
icon PixelMap Yes No PixelMap object of the icon on the historical page.
historyUrl string Yes No URL of the historical page.
historyRawUrl string Yes No Original URL of the historical page.
title string Yes No Title of the historical page.

WebCustomScheme

Defines a custom URL scheme.

System capability: SystemCapability.Web.Webview.Core

Name Type Readable Writable Description
schemeName string Yes Yes Name of the custom URL scheme. The value can contain a maximum of 32 characters and include only lowercase letters, digits, periods (.), plus signs (+), and hyphens (-).
isSupportCORS boolean Yes Yes Whether to support cross-origin resource sharing (CORS).
isSupportFetch boolean Yes Yes Whether to support fetch requests.