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This article mainly explains "how to realize the function of WeChat Pay initiated by Mini Program". The content of the explanation in the article is simple and clear, and it is easy to learn and understand. Now please follow the editor's train of thought slowly and deeply. Let's study and learn how to realize the function of Mini Program WeChat Pay.

Wx.requestPayment (OBJECT)

Initiated WeChat Pay.

Object parameter description:

The required parameter type indicates that timeStampString is the number of seconds in time stamp from 00:00:00 on January 1, 1970, that is, the current time nonceStrString is a random string with a length of less than 32 characters. PackageString is the prepay_id parameter value returned by the API for issuing orders. For example, prepay_id=*signTypeString is a signature algorithm. MD5paySignString is supported as a signature. For more information on the signature scheme, please see the Mini Program payment API documentation. SuccessFunction No API calls successful callback function failFunction No API calls failed callback function completeFunction No API calls the finished callback function (both successful and failed calls will be executed)

For more information, please check the WeChat Pay API documentation.

Callback result:

Callback type errMsg indicates that successrequestPayment:ok call payment succeeded failrequestPayment:fail cancel user canceled payment failrequestPayment:fail (detail message) call failed, where detail message is the detailed reason for the failure returned by the backend

Sample code:

Wx.requestPayment ({"timeStamp": "," nonceStr ":", "package": "," signType ":" MD5 "," paySign ":"," success ": function (res) {}," fail ": function (res) {}) Bug & Tip

Bug: in versions 6.5.2 and earlier, canceling payment by a user does not trigger a fail callback, but only a complete callback. The callback errMsg is' requestPayment:cancel'.

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