qrcode

The <qrcode> component is used to generate and display a QR code.

Required Permissions

None

Child Components

Not supported

Attributes

In addition to the attributes in Universal Attributes, the following attributes are supported.

Styles

In addition to the styles in Universal Styles, the following styles are supported.

NOTE:

• If the values of width and height are different, the smaller value is used as the length of the QR code. The generated QR code is center displayed.
• If either width or height is set, the value is used as the length of the QR code. If neither of them is set, the default length is 200 px.

Events

Events in Universal Events are supported.

Methods

Methods in Universal Methods are supported.

Example

<!-- xxx.hml -->
<div class="container">
  <qrcode value="{{qr_value}}" type="{{qr_type}}"
  style="color: {{qr_col}};background-color: {{qr_bcol}};width: {{qr_size}};height: {{qr_size}};margin-bottom: 70px;"></qrcode>
  <text class="txt">Type</text>
  <switch showtext="true" checked="true" texton="rect" textoff="circle" onchange="settype"></switch>
  <text class="txt">Color</text>
  <select onchange="setcol">
    <option for="{{col_list}}" value="{{$item}}">{{$item}}</option>
  </select>
  <text class="txt">Background Color</text>
  <select onchange="setbcol">
    <option for="{{bcol_list}}" value="{{$item}}">{{$item}}</option>
  </select>
</div>

/* xxx.css */
.container {
  width: 100%;
  height: 100%;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.txt {
  margin: 30px;
  color: orangered;
}
select{
  margin-top: 40px;
  margin-bottom: 40px;
}

/* index.js */
export default {
  data: {
    qr_type: 'rect',
    qr_size: '300px',
    qr_col: '#87ceeb',
    col_list: ['#87ceeb','#fa8072','#da70d6','#80ff00ff','#00ff00ff'],
    qr_bcol: '#f0ffff',
    bcol_list: ['#f0ffff','#ffffe0','#d8bfd8']
  },
  settype(e) {
    if (e.checked) {
      this.qr_type = 'rect'
    } else {
      this.qr_type = 'circle'
    }
  },
  setvalue(e) {
    this.qr_value = e.newValue
  },
  setcol(e) {
    this.qr_col = e.newValue
  },
  setbcol(e) {
    this.qr_bcol = e.newValue
  }
}