<div id="qrcode" style="display: none"></div>

import QRCode from 'qrcodejs2'
components: {QRCode,},

methods: {
//  生成二维码qrcode(record) {// console.log(platform.host)let qrcode = new QRCode('qrcode', {width: 500,height: 500,        // 高度text:  `http://www.baidu.com/`,   // 二维码内容render: 'canvas' ,   // 设置渲染方式（有两种方式 table和canvas，默认是canvas）})},// 下载二维码downloadImg(record) {this.qrcode(record)const myCanvas = document.getElementById('qrcode').getElementsByTagName("canvas")const a = document.createElement('a')a.href = myCanvas[0].toDataURL('image/png')a.download = record.activityNamea.click()this.$message.success('下载成功')},
}