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Share front-end WeChat payment js code

高洛峰
高洛峰Original
2017-03-28 13:57:071603browse

The example in this article shares the front-end WeChat paymentjs code for your reference. The specific content is as follows

$('.Save_Patient_Msg').click(function(){
 $('.Save_Patient_Msg').off('click');
 var hrdfId = getOrderId();
 var txnAmt = $('.sum_pay.font-red').html(); 
  
 var data = {orderId: hrdfId, txnAmt: "0.01", 
 prodDesc: "远程诊断服务", callType: "JSAPI",
 access_token: getUrlParam("access_token")
 };
  
 $.ajax({
 type: 'POST',
 url: '/hims/api/commonPay/queryTransNo?access_token='+getUrlParam('access_token'),
 dataType:'json',
 contentType:'application/json',
 data: JSON.stringify(data),
 success: function(Wxres){
 if(!Wxres){
 $.alert('服务器拥堵,请稍后访问')
 }else{
  console.log(Wxres);
  if(Wxres.data.respCode == 'fail'){
  $.alert(Wxres.data.respMsg);
  }else{
  //10 微信支付接口
  // 10.1 发起一个支付请求
  // 注意:此 Demo 使用 2.7 版本支付接口实现,建议使用此接口时参考微信支付相关最新文档。
  var param = Wxres.data;
  wx.config({
  debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来,若要查看传入的参数,可以在pc端打开,参数信息会通过log打出,仅在pc端时才会打印。
  appId: 'wx403ead26691402fb', // 必填,公众号的唯一标识
  timestamp: param.timestamp, // 必填,生成签名的时间戳
  nonceStr: param.noncestr, // 必填,生成签名的随机串
  signature: param.signJs,// 必填,调用js签名,
  jsApiList: ['chooseWXPay'] // 必填,需要使用的JS接口列表,这里只写支付的
  });
  wx.chooseWXPay({
  timestamp: param.timestamp, // 支付签名时间戳,注意微信jssdk中的所有使用timestamp字段均为小写。但最新版的支付后台生成签名使用的timeStamp字段名需大写其中的S字符
  nonceStr: param.noncestr, // 支付签名随机串,不长于 32 位
  package: "prepay_id="+param.transNo, // 统一支付接口返回的prepay_id参数值,提交格式如:prepay_id=***)
  signType: "MD5", // 签名方式,默认为'SHA1',使用新版支付需传入'MD5'
  paySign: param.sign, // 支付签名
  success: function (res) {
  if(res.errMsg == "chooseWXPay:ok"){
   //alert("支付成功");
   window.location.href = "/hims/weixin/pages/Order_ok.html?access_token="+getUrlParam("access_token");
  }else{
   alert(res.errMsg);
  }
  },
  cancel: function(res){
  //alert('取消支付');
  }
  });
  }
   
 } 
 },
 error:function(data){
  var msg = data.message || data.status;
  $.alert('服务器错误'+msg);
 }
 }); 
 return false;
  
 });
  
 function getUrlParam(name){
 var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象
 var r = window.location.search.substr(1).match(reg); //匹配目标参数
 if (r!=null) return unescape(r[2]); return null; //返回参数值
 } 
  
 })

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