小程序支付及H5支付前端代码小结

小程序支付和H5支付前端都不需要引入其他的js , 只需要后台将相关的参数

（

timeStamp: '',
nonceStr: '',
package: '',
signType: 'MD5',
paySign: '',

）

返回来就可以发起微信支付。

小程序支付：

wx.requestPayment({
  timeStamp: '',
  nonceStr: '',
  package: '',
  signType: 'MD5',
  paySign: '',
  success (res) { },
  fail (res) { }
})

H5支付：

 callpay(needData) {
   let that = this;
    if (typeof WeixinJSBridge == "undefined") {
          if (document.addEventListener) {
               document.addEventListener('WeixinJSBridgeReady', that.jsApiCall, false);
          } else if (document.attachEvent) {
              document.attachEvent('WeixinJSBridgeReady', that.jsApiCall);
              document.attachEvent('onWeixinJSBridgeReady', that.jsApiCall);
           }
           } else {
              that.jsApiCall(needData);
         }
  },
   jsApiCall(needData) {
        let that = this;
        WeixinJSBridge.invoke(
            'getBrandWCPayRequest', {
              "appId": needData.appId,
             "timeStamp": needData.timeStamp,
               "nonceStr": needData.nonceStr,
                "package": needData.package,
                "signType": needData.signType,
                 "paySign": needData.paySign,
                  },
                  function (res) {
                      
                            if (res.err_msg == "get_brand_wcpay_request:ok") {
                                // alert('微信支付成功!');
                                if (that.alonePay == true) { //单独购买
                                    window.location.href = "courseList.html" + "?goods_id=" + that
                                        .goods_id;
                                } else { //拼团购买
                                    window.location.href = "groupDetail.html" + "?group_id=" + that
                                        .group_id + "&goods_id=" + that.goods_id;
                                }
                                // window.location.href = "index.html";
                                //                        window.location.href="http://h5.taotiangou.cn";
                            } else if (res.err_msg == "get_brand_wcpay_request:cancel") {
                                alert('已取消微信支付!');
                                // window.location.href = "index.html";
                                //                        window.location.href="http://h5.taotiangou.cn";
                            } else if (res.err_msg == "get_brand_wcpay_request:fail") {
                                alert('微信支付失败!');
                                // window.location.href = "index.html";

                                //                        window.location.href="http://h5.taotiangou.cn";
                            }
                        }
                    );
                },