QR Code Reader For Vue.js 3

Install & Download:

# Yarn
$ yarn add vue3-qr-reader
# NPM
$ npm i vue3-qr-reader --save

Description:

This is the upgraded version of the gruhn’s vue-qrcode-reader that allows you to decode/parse QR code in the Vue.js 3 powered apps.

How to use it:

1. Import and register the QR Code Reader.

// globally
import { createApp } from 'vue';
import App from './App.vue'
import QrReader from 'vue3-qr-reader';
const app = createApp(App);
app.use(QrReader);
app.mount('#app')
// Locally
import { QrStream, QrCapture, QrDropzone } from 'vue3-qr-reader';
export default {
  components: {
    QrStream,
    QrCapture,
    QrDropzone
  },
};

2. Create a file upload field to scan all files you select.

<qr-capture @decode="onDecode" class="mb"></qr-capture>
<div class="result">
  Result: {{data}}
</div>

export default defineComponent({
  name: 'QrCaptureExample',
  components: {
    QrCapture
  },
  setup() {
    const state = reactive({
      data: null
    })
    function onDecode(data) {
      state.data = data
    }
    return {
      ...toRefs(state),
      onDecode
    }
  }
});

3. Access the device camera and continuously scans the incoming frame.

<div class="stream">
  <qr-stream @decode="onDecode" class="mb">
    <div style="color: red;" class="frame"></div>
  </qr-stream>
</div>
<div class="result">
  Result: {{data}}
</div>

export default defineComponent({
  name: 'QrStreamExample',
  components: {
    QrStream
  },
  setup() {
    const state = reactive({
      data: null
    })
    function onDecode(data) {
      state.data = data
    }
    return {
      ...toRefs(state),
      onDecode
    }
  }
});

4. Create a drag’n’drop zone to scan all files you dropped.

<qr-dropzone class="dropzone mb" @decode="onDecode">
  Drop image here.
</qr-dropzone>
<div class="result">
  Result: {{data}}
</div>

export default defineComponent({
  name: 'QrDropzoneExample',
  components: {
    QrDropzone
  },
  setup() {
    const state = reactive({
      data: null
    })
    function onDecode(data) {
      state.data = data
    }
    return {
      ...toRefs(state),
      onDecode
    }
  }
});