vue项目使用qrcode插件生成二维码

npm i qrcodejs2 --save

import QRCode from 'qrcodejs2'

<div class="qrcode" ref="qrCodeDiv"></div>
<script>
import QRCode from 'qrcodejs2'
export default {
  data() {
    return {
  },
  methods: {
	bindQRCode() {
      this.$nextTick(() => {
        new QRCode(this.$refs.qrCodeDiv, {
          text: url,//url地址  文本等需要转换为二维码的内容
          width: 80,
          height: 80,
          colorDark: "#333333", //二维码颜色
          colorLight: "#ffffff", //二维码背景色
          correctLevel: QRCode.CorrectLevel.L, //容错率，L/M/H
        });
      });
    },
  },
  mounted() {
    this.bindQRCode();
  },
};
</script>

//清除二维码
this.$refs.qrCodeDiv.innerHTML = "";

var qrcode = document.getElementById("qrcode");
var qrcode = new QRCode(qrcode , {
	text: "https://www.baidu.com/",
	width: 128,
	height: 128,
	colorDark : "#000000",
	colorLight : "#ffffff",
	correctLevel : QRCode.CorrectLevel.H
});

qrcode.clear(); // 清除.
qrcode.makeCode("二维码承载的信息"); // make another code.