一直是Redux的死忠黨，但使用過Vuex后，感嘆于Vuex上手之快，于是萌生了寫一個能在React里使用的類Vuex庫，暫時取名 Ruex 。

如何使用

一：創(chuàng)建Store實例:

與vuex一樣，使用單一狀態(tài)樹(一個對象)包含全部的應(yīng)用層級狀態(tài)(store)。

store可配置state,mutations,actions和modules屬性：

state :存放數(shù)據(jù) mutations :更改state的唯一方法是提交 mutation actions :Action 提交的是 mutation，而不是直接變更狀態(tài)。Action 可以包含任意異步操作，觸發(fā)mutation，觸發(fā)其他actions。

支持中間件：中間件會在每次mutation觸發(fā)前后執(zhí)行。

store.js:

import {createStore} from 'ruex'const state = { total_num:1111,}const mutations = { add(state,payload){ state.total_num += payload }, double(state,payload){ state.total_num = state.total_num*payload },}const actions = { addAsync({state,commit,rootState,dispatch},payload){ setTimeout(()=>{ commit('add',payload) },1000) }, addPromise({state,commit,rootState,dispatch},payload){ return fetch('https://api.github.com/search/users?q=haha').then(res=>res.json()) .then(res=>{ commit('add',1) dispatch('addAsync',1) }) }, doubleAsync({state,commit,rootState,dispatch},payload){ setTimeout(()=>{ commit('double',2) },1000) }, doublePromise({state,commit,rootState,dispatch},payload){ return fetch('https://api.github.com/search/users?q=haha').then(res=>res.json()) .then(res=>{ commit('double',2) dispatch('doubleAsync',2) }) },}// middlewareconst logger = (store) => (next) => (mutation,payload) =>{ console.group('before emit mutation ',store.getState()) let result = next(mutation,payload) console.log('after emit mutation', store.getState()) console.groupEnd()}// create store instanceconst store = createStore({ state, mutations, actions,},[logger])export default store

將Store實例綁定到組件上

ruex提供Provider方便store實例注冊到全局context上。類似react-redux的方式。

App.js：

import React from 'react'import {Provider} from 'ruex'import store from './store.js'class App extends React.Component{ render(){ return (  <Provider store={store} >  <Child1/>  </Provider> ) }}

使用或修改store上數(shù)據(jù)

store綁定完成后，在組件中就可以使用state上的數(shù)據(jù)，并且可以通過觸發(fā)mutation或action修改state。具體的方式參考react-redux的綁定方式：使用connect高階組件。

Child1.js:

import React, {PureComponent} from 'react'import {connect} from 'ruex'class Chlid1 extends PureComponent { state = {} constructor(props) { super(props); } render() { const { total_num, } = this.props return ( <div className=''> <div className=""> total_num: {total_num} </div> <button onClick={this.props.add.bind(this,1)}>mutation:add</button> <button onClick={this.props.addAsync.bind(this,1)}>action:addAsync</button> <button onClick={this.props.addPromise.bind(this,1)}>action:addPromise</button> <br /> <button onClick={this.props.double.bind(this,2)}>mutation:double</button> <button onClick={this.props.doubleAsync.bind(this,2)}>action:doubleAsync</button> <button onClick={this.props.doublePromise.bind(this,2)}>action:doublePromise</button> </div>) }}const mapStateToProps = (state) => ({ total_num:state.total_num,})const mapMutationsToProps = ['add','double']const mapActionsToProps = ['addAsync','addPromise','doubleAsync','doublePromise']export default connect( mapStateToProps, mapMutationsToProps, mapActionsToProps,)(Chlid1)