vue实现扫码功能

<template>
 <div class="scan">
 <div id="bcid">
  <div style="height:40%"></div>
  <p class="tip">...载入中...</p>
 </div>
 <footer>
  <button @click="startRecognize">1.创建控件</button>
  <button @click="startScan">2.开始扫描</button>
  <button @click="cancelScan">3.结束扫描</button>

  <button @click="closeScan">4.关闭控件</button>
 </footer>
 </div>
</template>

<script type='text/ecmascript-6'>
 let scan = null;

 export default {
 data() {
  return {
  codeUrl: '',
  }
 },
 methods: {
  //创建扫描控件
  startRecognize() {
  let that = this;
  if (!window.plus) return;
  scan = new plus.barcode.Barcode('bcid');
  scan.onmarked = onmarked;

  function onmarked(type, result, file) {
   switch (type) {
   case plus.barcode.QR:
    type = 'QR';
    break;
   case plus.barcode.EAN13:
    type = 'EAN13';
    break;
   case plus.barcode.EAN8:
    type = 'EAN8';
    break;
   default:
    type = '其它' + type;
    break;
   }
   result = result.replace(/\n/g, '');
   that.codeUrl = result;
   alert(result);
   that.closeScan();

  }
  },
  //开始扫描
  startScan() {
  if (!window.plus) return;
  scan.start();
  },
  //关闭扫描
  cancelScan() {
  if (!window.plus) return;
  scan.cancel();
  },
  //关闭条码识别控件
  closeScan() {
  if (!window.plus) return;
  scan.close();
  },
 }
 }
</script>
<style lang="less">
 .scan {
 height: 100%;
 #bcid {
  width: 100%;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom:3rem;
  text-align: center;
  color: #fff;
  background: #ccc;
 }
 footer {
  position: absolute;
  left: 0;
  bottom: 1rem;
  height: 2rem;
  line-height: 2rem;
  z-index: 2;
 }
 }
</style>