Log
The Log module provides basic log printing capabilities and supports log printing by log level.
If you want to use more advanced log printing services, for example, filtering logs by the specified ID, you are advised to use @ohos.hilog.
NOTE
The initial APIs of this module are supported since API version 3. Newly added APIs will be marked with a superscript to indicate their earliest API version.
console.log
log(message: string): void
Prints logs.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| message | string | Yes | Text to print. |
console.debug
debug(message: string): void
Prints debug-level logs.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| message | string | Yes | Text to print. |
console.info
info(message: string): void
Prints info-level logs.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| message | string | Yes | Text to print. |
console.warn
warn(message: string): void
Prints warn-level logs.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| message | string | Yes | Text to print. |
console.error
error(message: string): void
Prints error-level logs.
System capability: SystemCapability.ArkUI.ArkUI.Full
Parameters
| Name | Type | Mandatory | Description |
|---|---|---|---|
| message | string | Yes | Text to print. |
Example
export default {
clickConsole(){
var versionCode = 1;
console.info('Hello World. The current version code is ' + versionCode);
console.log(`versionCode: ${versionCode}`);
/ / The following is supported since API version 6: console.log('versionCode:%d.', versionCode);
}
}
Switch to the HiLog window at the bottom of HUAWEI DevEco Studio. Specifically, select the current device and process, set the log level to Info, and enter Hello World in the search box. Logs that meet the search criteria are displayed, as shown in the following figure.
