React实战篇（React仿今日头条）

摘要：前言上次初学用写了个后台管理，这次便寻思写个移动端的项目。便有了这次的这个项目。然后通过来判断如何动画具体处理异步用来书写跟配置还有一些零零散散的知识点，就不介绍了，具体可以到上查看。个人博客在线观看地址

上次初学用 react 写了个后台管理，这次便寻思写个移动端的项目。便有了这次的这个项目。

这个项目以前写了个 vue 的版本。有兴趣的可以 点击进入

模拟数据用的是 Easy Mock
用的是我以前写 vue-toutiao 用到的数据

账号: vue-toutiao
密码： 123456

react + react-redux + react-router + webpack

build: webpack配置

config: 项目配置参数

src
actions: 存放 action 方法
assets: 静态资源文件，存放图片啥的
components: 常用组件
reducers: 存放 reducer
router: 路由管理
store: 状态管理 redux
styles: 样式文件
utils: 常用封装
views: 视图页面

static: 静态文件： 存放 favicon.ico 等等

通过 import() 方法加载组件， 在通过高阶组件处理 import 返回的 Promise 结果。

// asyncComponent.js
import React from "react"

export default loadComponent => (
    class AsyncComponent extends React.Component {
        state = {
            Component: null,
        }
        async componentDidMount() {
            if (this.state.Component !== null) return
            try {
                const {default: Component} = await loadComponent()
                this.setState({ Component })
            }catch (err) {
                console.error(`Cannot load component in `);
                throw err
            }
        }

        render() {
            const { Component } = this.state
            return (Component) ?  : null
        }
    }
)

如下使用

import asyncComponent from "./asyncComponent"
const Demo = asyncComponent(() => import(`views/demo.js`))

统一配置路由，及路由状态

import asyncComponent from "./asyncComponent"
const _import_views = file => asyncComponent(() => import(`views/${file}`))
export const loyoutRouterMap = [
    { 
        path: "/", 
        name: "首页", 
        exact: true,
        component: _import_views("Home")
    },
    { 
        path: "/video", 
        name: "视频",
        component: _import_views("Video")
    },
    { 
        path: "/headline", 
        name: "微头条",
        component: _import_views("Headline")
    },
    { 
        path: "/system", 
        name: "系统设置",
        auth: true, 
        component: _import_views("System")
    }
] 

通过路由配置中 auth 属性来判断是否需要登录
如以下配置

{ 
    path: "/system", 
    name: "系统设置",
    auth: true, 
    component: _import_views("System")
}

登陆配置及判断

// authRoute.js
import React from "react"
import store from "../store"
import { Route, Redirect } from "react-router-dom"

export default class extends React.Component {
    render () {
        let {component: Component, ...rest} = this.props
        // 是否登录
        if (!store.getState().user.user.name) {
            return 
        }
        return 
    }
}


// 生成route
const renderRouteComponent = routes => routes.map( (route, index) => {
    if (route.auth) { // 需要权限登录
        return 
    }
    return 
})

通过 react-router-transition 做的切换动画。

然后通过 history.slideStatus 来判断如何动画

react-router-transition 具体API

用 redux-actions 来书写 action 跟 reducer

// action.js
import { createAction } from "redux-actions"
import axios from "utils/axios"
export const getHeadlineList = (params) => dispatch => {
    return new Promise( (resolve, reject) => {
        axios.get("headline/list", params)
            .then( res => {
                const list = res.data.list
                dispatch(createAction("GET_HEADLINE_LIST")(list))
                resolve(list)
            }).catch( err => {
                reject(err)
            })
    })
}

// reducer.js
import { handleActions } from "redux-actions"
import { combineReducers } from "redux"
const state = {
    headlineList: []
}
const headline = handleActions({
    GET_HEADLINE_LIST: (state, action) => {
        let list = action.payload
        state.headlineList = state.headlineList.concat(list)
        return {...state}
    }
}, state)
export default combineReducers({
    headline
})

// store.js  
// redux-thunk配置
import { createStore, compose, applyMiddleware  } from "redux"
import reducer from "../reducers"
import thunk from "redux-thunk"
const configureStore => createStore(
    reducer,
    compose(
        applyMiddleware(thunk)
    ) 
)
export default configureStore()

还有一些零零散散的知识点，就不介绍了，具体可以到 github 上查看。

github
个人博客
在线观看地址