qrcode.vue

⚠️ Now when you are using Vue 3.x, please upgrade qrcode.vue to 3.x

🔒 if you are using Vue 2.x, please keep using version 1.x;

A Vue.js component to generate QRCode. Both support Vue 2 and Vue 3.

中文 | 日本語

install

the qrcode.vue component can use in you Vue.js app.

npm install --save qrcode.vue # yarn add qrcode.vue

dist/
|--- qrcode.vue.cjs.js         // CommonJS
|--- qrcode.vue.esm.js         // ES module
|--- qrcode.vue.browser.js     // UMD for browser or require.js or CommonJS
|--- qrcode.vue.browser.min.js // UMD Minimum size

Usage

e.g.

import { createApp } from 'vue'
import QrcodeVue from 'qrcode.vue'

createApp({
  data: {
    value: 'https://example.com',
  },
  template: '<qrcode-vue :value="value"></qrcode-vue>',
  components: {
    QrcodeVue,
  },
}).mount('#root')

Or single-file components with a *.vue extension:

<template>
  <qrcode-vue :value="value" :size="size" level="H" render-as="svg" />
  <qrcode-canvas :value="QRCODE.VUE 😄" :size="size" level="H" />
  <qrcode-svg value="QRCODE.VUE 😄" level="H" />
</template>
<script>
  import QrcodeVue, { QrcodeCanvas, QrcodeSvg } from 'qrcode.vue'

  export default {
    data() {
      return {
        value: 'https://example.com',
        size: 300,
      }
    },
    components: {
      QrcodeVue,
      QrcodeCanvas,
      QrcodeSvg,
    },
  }
</script>

When you use the component with Vue 3 with TypeScript:

<template>
  <qrcode-vue
    :value="value"
    :level="level"
    :render-as="renderAs"
    :background="background"
    :foreground='foreground'
    :image-settings='imageSettings'
  />
</template>
<script setup lang="ts">
  import { ref } from 'vue'
  import QrcodeVue from 'qrcode.vue'
  import type { Level, RenderAs, ImageSettings } from 'qrcode.vue'

  const value = ref('qrcode')
  const level = ref<Level>('M')
  const renderAs = ref<RenderAs>('svg')
  const background = ref('#ffffff')
  const foreground = ref('#000000')
  const margin = ref(0)
  const imageSettings = ref<ImageSettings>({
    src: 'https://github.com/scopewu.png',
    width: 30,
    height: 30,
    // x: 10,
    // y: 10,
    excavate: true,
  })
</script>

Component props

value

• Type: string
• Default: ''

The value content of qrcode.

size

• Type: number
• Default: 100

The size of qrcode element.

render-as

• Type: RenderAs('canvas' | 'svg')
• Default: canvas

Generate QRcode as canvas or svg. The prop svg can work on SSR.

margin

• Type: number
• Default: 0

Define how much wide the quiet zone should be.

level

• Type: Level('L' | 'M' | 'Q' | 'H')
• Default: L

qrcode Error correction level (one of 'L', 'M', 'Q', 'H'). Know more, wikipedia: QR_code.

background

• Type: string
• Default: #ffffff

The background color of qrcode.

foreground

• Type: string
• Default: #000000

The foreground color of qrcode.

image-settings

• Type: ImageSettings

• Default: {}

  export type ImageSettings = {
    src: string, // The URL of image.
    x?: number,  // The horizontal offset. When not specified, will center the image.
    y?: number,  // The vertical offset. When not specified, will center the image.
    height: number, // The height of image
    width: number,  // The height of image
    excavate?: boolean, // Whether or not to "excavate" the modules around the image.
  }

The settings to support qrcode image logo.

class

• Type: string
• Default: ''

The class name of qrcode element.

License

copyright © 2021 @scopewu, license by MIT