# wx.requestPayment(Object object)

with Promise style call: Supported

Mini Program plugin: Not supported

Initiate WeChat Pay. Before calling,Mini Program WeChat Official Platform -Function - Apply for access to WeChat Pay. For more information, you can refer to WeChat Pay Development Document

If usedCloud DevelopmentThen wx.requestPayment The required parameters can be obtained through cloud development WeChat payment unified single interface from authentication, and can be certificate free, signature free security call WeChat payment server interface, and receive asynchronous payment results callback, seeCloud Development WeChat Pay

# parameter

# Object object

attribute type Default values Required Introductions
timeStamp string yes Timestamp, from 1970 year 1 Moon 1 day 00:00:00 Number of seconds to date, the current time
nonceStr string yes A random string of 32 characters or less in length
package string yes Unified single interface returns prepay_id Parameter values in the format of prepay_id=***
signType string MD5 no Signature algorithm, should be consistent with the value of the background order
paySign string yes Signature, see WeChat payment documents
success function no Interface calls the successful callback function
fail function no Interface calls failed callback functions
complete function no Callback function at the end of an interface call (both successful and unsuccessful calls are executed)

object.signType Legal value

value Introductions Minimum version
MD5 Only in v2 Version Interface
HMAC-SHA256 Only in v2 Version Interface
RSA Only in v3 Version Interface

# sample code

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

Note: If the server has the use of cloud development, you can use cloud development WeChat paymentUnified ordersInterface to get all required parameters above without authentication. Example:

// Cloud function code
const cloud = require('wx-server-sdk')
  The following are the following: cloud.DYNAMIC_CURRENT_ENV

exports.main = async (event, context) => {
  const res = await cloud.cloudPay.unifiedOrder({
    "body" : "Xiaoqiu TIT shop - supermarket,"
    "outTradeNo" : "1217752501201407033233368018",
    "spbillCreateIp" : "",
    "subMchId" : "1900009231",
    "totalFee" : 1,
    "envId": "test-f0b102",
    "functionName": "pay_cb"
  return res

// Mini Program code
  name: 'function name'
  data: {
    // ...
  success: res => {
    const payment = res.result.payment
      success (res) {
        console.log('pay success', res)
      fail (err) {
        console.error('pay fail', err)
  fail: console.error,