简介 Redux 中的 combineReducers 能让我们很方便地把多个 reducers 组合起来,成为一个新的 reducer。 然而,随着我们的应用变得越来越复杂,combineReducers 有可能不能满足我们的需求。正如 Redux 官方文档所说: This helper is just a convenie...
...文章:redux源码分析之一:createStore.jsredux源码分析之二:combineReducers.jsredux源码分析之三:bindActionCreators.jsredux源码分析之四:compose.jsredux源码分析之五:applyMiddleware combineReducers.js文件对外暴露了一个函数combineReducers,combineRed...
...x搞成支持支持多个reducer 0x002 拆封reducer import {createStore, combineReducers} from redux const ACTION_NUM1_INCREMENT = ACTION_NUM1_INCREMENT const ACTION_NUM2_INCREMENT = ACTION_NUM2_INCREMENT const nu...
...就实现了createStore,当然实际上还是会稍微复杂一点。 7. combineReducers 从上述我们实现的createStore源码可以看出,传入的reducer只有一个。 真实的应用中reducer是多个的,因此我们需要把reducer组合起来。combineReducers就是帮我们完成...
...候我们就需要拆分reducer。 幸好,redux提供了一个api就是combineReducers Api。 store store是redux应用的唯一数据源,我们调用createStore Api创建store。 脱离react的redux案例 store,reducer基础使用 第一步搭建开发环境,这里不介绍了,参考上...
...redux,建议先去看看redux文档 api方法 export { createStore, combineReducers, bindActionCreators, applyMiddleware, compose } 可以看到我们在react代码中使用到的api,一般主动调用的就是 combineReducers ,其他部分参照例子基本可以搬过来 combineRe...
...变更 那么reducer是怎么改变state的呢?这就涉及到下面的combineReducers了 2、combineReducers 回到上面创建store的参数reducers, // 两个reducer const todos = (state = INIT.todos, action) => { // .... }; const filterStatus = (state = ...
... redux简单学习(二) redux简单学习[ store, action, reducer ] 1. combineReducers combineReducers,合并多个reducer 如有下面两个reducer,todoApp,textApp // reducers/todoApp.js export default function todoApp(state, action)...
...s.compose = exports.applyMiddleware = exports.bindActionCreators = exports.combineReducers = exports.createStore = undefined; var _createStore = __webpack_require__(2); var _createStore2 ...
...逻辑 store通过createStore()方法创建,接受三个参数,经过combineReducers合并的reducer和state初始状态以及改变dispatch的中间件,后两个参数不是必须的,store的主要作用是将action和reducer联系起来并改变state, action action是一个对象,其...
...eateStore`方法的实现 import createStore from ./createStore // 引入combineReducers模块,这个模块就是`combineReducers`方法的实现 import combineReducers from ./combineReducers // 引入bindActionCreators模块,这个模块就是`bindActionCr...
...变更 那么reducer是怎么改变state的呢?这就涉及到下面的combineReducers了。 combineReducers 回到上面创建store的参数reducers, // 两个reducer const todos = (state = INIT.todos, action) => { // .... }; const filterStatus = (state = I...
...Redux 的代码量非常短小,核心只提供了 5 个 API createStore combineReducers bindActionCreators applyMiddleware compose 下面先来直观的感受下 Redux import { createStore } from redux; function counter(state = 0, action) { s...
...does not have a valid reducer. Make sure the argument passed + to combineReducers is an object whose values are reducers. ) } if (!isPlainObject(inputState)) { return ( `T...
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