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Most people do not understand the knowledge points of this article "how to bind Redux in WeChat Mini Programs", so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "how to bind Redux in WeChat Mini Programs" article.

Installation

Clone or download the code base locally:

Git clone https://github.com/charleyw/wechat-weapp-redux

Copy the dist/wechat-weapp-redux.js (or copy minify) file directly into the Mini Program project, for example (suppose we install all the third-party packages in the libs directory):

Cd wechat-weapp-redux cp-r dist/wechat-weapp-redux.js / libs

The above command copies the package to the libs directory of Mini Program

Use

1. Bind Redux Store to App.

Const store = createStore (reducer) / / redux store const WeAppRedux = require ('. / libs/wechat-weapp-redux/index.js'); const {Provider} = WeAppRedux

Provider is used to bind the store of Redux to App.

App (Provider (store) ({onLaunch: function () {console.log ("onLaunch")}})

The implementation of provider is simply to add store to the global object App so that it can be easily extracted from the page with getApp.

The above code is equivalent to:

App ({onLaunch: function () {console.log ("onLaunch")}, store: store})

two。 Use connect on the definition of the page and bind redux store to the page.

Const pageConfig = {data: {},...}

Definition of the page

Const mapStateToData = state = > ({todos: state.todos, visibilityFilter: state.visibilityFilter})

Define which state to map to the page

Const mapDispatchToPage = dispatch = > ({setVisibilityFilter: filter = > dispatch (setVisibilityFilter (filter)), toggleTodo: id = > dispatch (toggleTodo (id)), addTodo: text = > dispatch (addTodo (text)),})

Define which methods to map to the page

Const nextPageConfig = connect (mapStateToData, mapDispatchToPage) (pageConfig)

Use connect to add the above definition to pageConfig.

Page (nextPageConfig)

Register the page of Mini Program

3. Description

After completing the above two steps, you can access the data you defined in mapStateToData in this.data.

The action defined by mapDispatchToPage is mapped to the this object.

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