小程序支付代码示例

onPayTest() {


    var data = {
      "nonceStr": "23",
      "timeStamp": "1528098190",
      "signType": "MD5",
      "paySign": "ED55C8",
      "package": "0492238"
    }
    wx.requestPayment({
      'timeStamp': data.timeStamp,
      'nonceStr': data.nonceStr,
      'package': "prepay_id=" + data.package,
      'signType': data.signType,
      'paySign': data.paySign,
      'success': function (res) {
        console.log("发起支付 res=>", res);
if (res.errMsg.indexOf("ok") != -1) {
            wx.showModal({
              title: '',
              content: "已完成支付",
              showCancel: false,
              success: function (res) {
                
              }
            });
          } else {
            wx.showModal({
              title: '',
              content: res.errMsg + "",
              showCancel: false,
              success: function (res) {
              
              }
            });
          }

      },
      'fail': function (err) {
        console.log("发起支付 err=>", err);
  if (err && err.errMsg == "requestPayment:fail cancel") {
            
          //取消支付
          } else {
           
          }

      }
    })
}

参考文档：

1、https://pay.weixin.qq.com/static/applyment_guide/applyment_detail_miniapp.shtml

2、https://developers.weixin.qq.com/miniprogram/dev/api/payment/wx.requestPayment.html