# wx.getMiniProgramCode

Evoke WeChat Mini Program loginWhen successful, you can call wx.getMiniProgramCode Get WeChat temporary login credentials ([Mini Program code](https://developers.weixin.qq.com/miniprogram/dev/api/open-api/Login/wx.login.html#Function description))Which allows for rapid adaptation wx.login, Detailed Usage Guide can be viewedQuick Access Mini Program Login Service。

# Front preparation

[Multiple application accounts need to bind mobile application accounts](https://dev.weixin.qq.com/docs/framework/Guideline/web/bind-openapp .html)
Need to be in the project.miniapp.json Tick OpenSDK
wx.weixinMiniProgramLogin Call success, that is, evoke WeChat Mini Program login success

# parameter

# Object object

attribute	type	Required	Introductions
success	function	no	Interface calls a successful callback function
fail	function	no	Interface to call a failed callback function
complete	function	no	The callback function at the end of an interface call

# object.success callback

# parameter

# Object res

attribute	type	Introductions
Code	string	User login credentials (valid for five minutes). The developer can call thecode2Session, Get the openid、unions Such information

# object.fail callback

# parameter

# Object res

attribute	type	Introductions
errCode	number	Error code
errMsg	string	Error message

**res.errCode **

errCode	Introductions
-1	system error
10001011	System login status invalid
10001014	Login verification failed, please check whether to complete the evoke WeChat Mini Program login
-700000	Front End Error, errMsg Will give detailed hints

Common Front End Errors

errMsg	guide
No system login state and missing system login page	See miniprogramLoginPath The configuration is correct
sendOpenReq:fail launch wechat fail	Pull up WeChat failed, that is, your multi-terminal application has not yet bound to the mobile application account, resulting in OpenSDK failed. Solutions:[Binding Mobile App Account](https://dev.weixin.qq.com/docs/framework/Guideline/web/bind-openapp .html)

# sample code


// Pre-conditions: multi-terminal application login evoke WeChat Mini Program login success.

// Get the Mini Program code
wx.getMiniProgramCode ({
  success (res) {
    if (res.code) {
      // Initiate a network request
      wx.request({
        url: 'https://example.com/onLogin',
        data: {
          code: res.code
        }
      })
    } else {
      console.log('Get the Mini Program Code Fail! ' + res.errMsg )
    }
  }
})