微信小程序支付前端源码

//index.jsPage({ data: { }, //点击支付按钮进行支付 payclick: function () { var t = this; wx.login({  //获取code换取openID  success: function (res) {  //code = res.code //返回code  console.log("获取code");  console.log(res.code);  var opid = t.getOpenId(res.code);  } }) }, //获取openID getOpenId: function (code) { var that = this; wx.request({  url: "https://api.weixin.qq.com/sns/jscode2session?appid=你的appid&secret=AppSecret(小程序密钥)&js_code=" + code + "&grant_type=authorization_code",  data: {},  method: 'GET',  success: function (res) {  console.log("获取openid")  console.log(res)  that.setData({   openid: res.data.openid,   session_key: res.data.session_key  })  that.generateOrder(res.data.openid)  },  fail: function () {  // fail  },  complete: function () {  // complete  } }) }, //生成商户订单 generateOrder: function (openid) { var that = this wx.request({  url: 'http://localhost:25492/wx/getda',//后台请求地址  method: 'GET',  data: {  gfee: '商品价钱',  gname: '商品名称',  openId: openid  //（商品价钱和商品名称根据自身需要是否传值, openid为必传）  },  success: function (res) {  console.log("后台获取数据成功");  console.log(res);  var param = { "timeStamp": res.data.timeStamp, "package": res.data.package, "paySign": res.data.paySign, "signType": "MD5", "nonceStr": res.data.nonceStr };   //发起支付  that.pay(param);  },  fail: function (res) {  console.log("向后台发送数据失败")  } }) }, //支付 pay: function (param) { var that = this; console.log("发起支付") console.log(param) wx.requestPayment({  timeStamp: param.timeStamp,  nonceStr: param.nonceStr,  package: param.package,  signType: param.signType,  paySign: param.paySign,  success: function (res) {  console.log("success");  console.log(res);  },  fail: function (res) {  console.log("fail")  console.log(res);  },  complete: function (res) {  console.log("complete");  console.log(res)  } }) }})