微信浏览器唤起微信支付

微信浏览器自带WeixinJSBridge方法直接调用就可以唤起微信支付

wxpay(data) {

      var ua = navigator.userAgent.toLowerCase();

      var isWeixin = ua.indexOf("micromessenger") != -1;

      pay(data)

        .then((res) => {

          if (res.success) {

            console.log(res.data.result);

            const pay_params = res.data.result;

            if (isWeixin) {

              if (typeof WeixinJSBridge == "undefined") {

                if (document.addEventListener) {

                  document.addEventListener(

                    "WeixinJSBridgeReady",

                    onBridgeReady,

                    false

                  );

                } else if (document.attachEvent) {

                  document.attachEvent("WeixinJSBridgeReady", onBridgeReady);

                  document.attachEvent("onWeixinJSBridgeReady", onBridgeReady);

                }

              } else {

                this.onBridgeReady(pay_params);

              }

            } else {

              // this.goLoginPage (pay_params)

            }

          } else {

            Toast.fail("微信支付调起失败！");

          }

        })

        .catch((err) => {

          console.log(err);

        });

    },

    onBridgeReady(params) {

      const pay_params = params;

      WeixinJSBridge.invoke(

        "getBrandWCPayRequest",

        {

          appId: pay_params.appId, //公众号名称，由商户传入

          timeStamp: pay_params.timeStamp, //时间戳，自1970年以来的秒数

          nonceStr: pay_params.nonceStr, //随机串

          package: pay_params.package,

          signType: pay_params.signType, //微信签名方式：

          paySign: pay_params.paySign, //微信签名

        },

        function (res) {

          if (res.err_msg == "get_brand_wcpay_request:ok") {

            Toast.success("支付成功！");

          }

        }

      );

    },