# wx.requestOrderPayment(Object args)

Start from base library version 2.16.0. Please remaining backward compatible.

with Promise style call: Supported

Mini Program plugin: Not supported

Create custom transaction component order and initiate payment. Only connectedCustom Version Transaction Component的小程序需要使用，普通小程序可直接使用 wx.requestPayment。

# parameter

# Object args

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=***
paySign	string		yes	Signature, see WeChat payment documents
orderInfo	Object		no	Order information, to be passed only in scenarios where validation is required, seeInterface Dxplaination
extUserUin	string		no	External APP User ID
signType	string	MD5	no	Signature algorithm, should be consistent with the value of the background order
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)

args.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


// except orderInfo The remaining fields correspond to the wx.requestPayment Agreement
wx.requestOrderPayment({
  orderInfo: {},
  timeStamp: '',
  nonceStr: '',
  package: '',
  signType: 'MD5',
  paySign: '',
  success (res) { },
  fail (res) { }
})

# Pre-check

Access to the custom version of the transaction components, to initiate WeChat payment, please checkScenarios requiring validation。 In the scenario that requires verification, the interface must be used when initiating WeChat payment, and the relevantOrder information进行校验，校验通过后用户才可以完成当前订单的支付，非需要校验的场景则可以按照商家要求自行选择传入订单信息或不传入。