# WeChat login instructions

In a multiterminal application, developers can use the following 3 individual api To achieve WeChat login:

# I. Registration of Mobile Application Account

• 3 Each interface requires the developer to register the WeChat open platform mobile application account, if you already have a mobile application account, you can skip this step.If you do not have a mobile app account, you can follow the steps in this section to complete the creation and review.

# 1. Register WeChat Open Platform Account

• Go toWeChat Open PlatformComplete registration, detailed operating instructions can be viewedWeChat Open Platform Registration Guidelines

# 2. Create a mobile application account

• log inWeChat Open Platform, and head to theManagement Center - Mobile Applications
• to hitCreating Mobile Apps, and then fill in the mobile application name, introduction, official website, icon and other basic information and development information, and then submit to review
• After waiting for approval, you canManagement Center - Mobile Applications - Application DetailsTo view the mobile app in AppID information (Required when calling the interface)

# II. wx.miniapagelogin

# 1. Instructions for use

• wx.miniapp.login Be based on OpenSDK, associated with WeChat open platform transfer application The AppID, and the last thing you get is the user in the App to hit the target Openid
• If you need to associate the Mini Program's Openid Information, the Mini Program can be bound in the WeChat open platform, so as to obtain UnionID, via unionID Associate mobile apps with Mini Programs.
• Go to ViewInterface details

# 2. Initialization Configuration

Before using WeChat open capabilities, you need to complete the initialization configuration.

• Go to ViewWeChat mobile application capability initialization guidelines

# 3. Call Example

Example:

// Login
wx.miniapp.login ({
    success: (res) => {
        console.log('login success:', res.code)
    }
})

# III. wx.login

# 1. Instructions for use

• This interface is only suitable for the early rapid debugging phase and is not intended as a App The formal scheme for logging in, it is recommended to use the wx.miniapp.login or [wx.getMiniProgramCode ](https://dev.weixin.qq.com/docs/auth/jsapi/Weixin/wx.getMiniProgramCode .html)
• During the development debugging phase, which can be found in theMobile App AssistantExperience test in wx.loginScenarios where developers build packages are installed on the phone for debugging are not supported.

# 2. Steps to Use

• When using the "upgrade to multi-terminal project" ability in the WeChat developer tool, the tool will automatically generate app.miniapp.json This file and fill in the corresponding information of the WeChat mini program you want to jump to.

• app.miniapp.json File in Mini Program Project miniprogramRoot Directory configuration, the content has been automatically configured, developers do not need to adjust ：

{
    "adapteByMiniprogram": {
        "userName": "xxxx", // Mini Program primitive id (not Mini Program appid)// And the field will be filled in by default, developers do not need to adjust 
    }
}

• In addition, when a multiterminal application is calling the wx.login Interface, where the base library has been implemented with compatible logic, so that developers do not have to perceive changes. Jump to the specific page of the target WeChat Mini Program, which will be executed inside the specific page, and execute the wx.login Interface, and finally pass the returned code content back to the multiterminal Mini Program. Finally, in the multi-terminal Mini Program wx.login of success Interface to return the WeChat Mini Program returned code。 So that developers continue to call the original way Wx.login without changing the business logic.

# IV. wx.weixinAppLogin

• Details can be viewedhttps://dev.weixin.qq.com/docs/auth/jsapi/Weixin/wx.weixinAppLogin.html