QRCODE 根据url生成二维码图片

https://www.npmjs.com/package/qrcode

使用起来比较简单就不多赘述了 详情见文档 

//引入 
import QRCode from "qrcode";

 try {
        let url = await QRCode.toDataURL(this.payInfo.codeUrl);  //返回promise
        //elementUi弹窗
        this.$alert(`<img src=${url} />`, "微信支付二维码", {
          dangerouslyUseHTMLString:true,
          confirmButtonText: "已支付成功",
          cancelButtonText: "支付遇到问题",
          showClose: false,
          center: true,
          showCancelButton: true,
          callback: (action) => {},
        }); 
      } catch (err) {
        console.log(err, "err");
      }