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";
                             }
                         }
                     );
                 },