vue-qr生成下載二維碼

安裝vue-qr

npm install vue-qr --save

生成二維碼實列

---

<vue-qr  ref="Qrcode" 
    :text="qrCodeConfig.text" 
    :download="downloadFilename" 
    :margin="10" 
    :size="200" 
    :dotScale="qrCodeConfig.dotScale" 
    :colorDark="qrCodeConfig.colorDark"
>
</vue-qr>
data(){
    return {
        qrCodeConfig: {
            text: 'http://121.40.121.142:8080/register?parent_id='+id,
            dotScale: 0.9,
            colorDark: '#663300'
        },
        downloadFilename:''
    }
}

屬性介紹

---

屬性	描述	舉列
text	要生成二維碼的內容	https://segmentfault.com/write
size	設置二維碼大小,寬高相等	200
margin	二維碼與邊框的距離,可以設置白邊	20
colorDark	實點的顏色	#333
colorLight	空白區的顏色	#999
bgSrc	欲嵌入的背景圖地址	https://www.vipbic.com/**.jpg
gifBgSrc	欲嵌入的背景圖 gif 地址,設置後普通的背景圖將失效。設置此選項會影響性能	200
backgroundColor	背景色	#666
backgroundDimming	疊加在背景圖上的顏色, 在解碼有難度的時有一定幫助	#444
logoSrc	中央圖片或logo的路徑	https://www.vipbic.com/**.jpg
logoMargin	LOGO 標識周圍的空白邊框	1
logoBackgroundColor	Logo 背景色,需要設置 logo margin	#888
logoCornerRadius	LOGO 標識及其邊框的圓角半徑	3

下載二維碼

---

downloadImg () {
      const iconUrl = this.$refs.Qrcode.$el.src
      let a = document.createElement('a')
      let event = new MouseEvent('click')
      a.download = '二維碼'
      a.href = iconUrl
      a.dispatchEvent(event)
}

最終效果

---

最終代碼

---

<template>
  <div class="full-screen-btn-con">
    <Button type="warning" @click="showImage">獲取二維碼</Button>
    <Modal
        v-model="modal"
        title="經濟人二維碼"
        >
        <div class="code-img">
          <vue-qr  ref="Qrcode" :text="qrCodeConfig.text" :download="downloadFilename" :margin="10" :size="200" :dotScale="qrCodeConfig.dotScale" :colorDark="qrCodeConfig.colorDark"></vue-qr>
        </div>
        <div slot="footer">
          <Button type="primary" @click="downloadImg">下載二維碼</Button>
          <Button type="primary" @click="modal = !modal">關閉</Button>
        </div>
    </Modal>
  </div>
</template>

<script>
import VueQr from 'vue-qr'
export default {
  name: 'Fullscreen',
  components: {
    VueQr
  },
  data(){
    let id = this.$store.state.user.userId;
    return {
      modal : false,
      qrCodeConfig: {
        text: 'http://121.40.122.152:8080/register?parent_id='+id,
        dotScale: 0.9,
        colorDark: '#663300'
      },
      downloadFilename:''
    }
  },
  methods: {
    showImage (sid, key, index) {
        this.modal = true
    },
    downloadImg () {
          const iconUrl = this.$refs.Qrcode.$el.src
          let a = document.createElement('a')
          let event = new MouseEvent('click')
          a.download = '二維碼'
          a.href = iconUrl
          a.dispatchEvent(event)
    }
  },
  mounted () {
    
  }
}
</script>

<style lang="less" scoped>
  .code-img{
    text-align: center;
  }
</style>