vue 和 react 学习 异同点
本文不做两个框架比较，只对比了两个框架的语法对比，不代表任何观点，盗版必究，本人唯一qq：421217189 欢迎大家一起来学习探讨，壮我大前端（本文markdown直接生成，没有排版，也是为了防止那些不要脸的直接复制我文章的人，在此特声明，所有直接窃取文化知识的人，本人必将追究法律责任，本人qq：421217189，新增一个qq专为大家提供技术：15274527。）
先说一下两个框架的中文文档
Vue
react
可以点击直接前往
安装
vue
$ vue init webpack my-project $ cd my-project $ npm install $ npm run dev
react
$ create-react-app my-app $ cd my-app/ $ npm start
修改端口
vue
/config/index.js/
react
/package.json
hellow world 展示实例生成
vue
import Vue from 'vue' new Vue({ el: '#app', template:` <h1> hello world </h1> ` })
react
import React from 'react' import ReactDOM from 'react-dom' ReactDOM.render( <h1>hello world</h1>, document.getElementById('root') )
dev 运行方式
vue
- npm run dev
react
- npm start
变量的使用
vue
import Vue from 'vue' new Vue({ el: '#app', data(){ return { msg: 'hello world', } }, template:` <h1> {{ msg }} </h1> ` })
react
import React from "react"; import ReactDOM from "react-dom"; class State extends React.Component{ constructor(){ super(); this.state={ msg:'this is react' } } render(){ return( <div>{this.state.msg}</div> ) } } ReactDOM.render( <State/>, document.getElementById('root') )
组件props的使用
vue
main.js
import Vue from 'vue' import app from './components/app.vue' new Vue({ el: '#app', components:{ app, }, template:'<app zhangsan="zhangsan"/>' })
app.vue
<template> <h1>{{zhangsan}}</h1> </template> <script> export default { props:[ 'zhangsan' ], data(){ return { msg:'hello world' } } } </script> <style> </style>
react
index.js
import React from "react"; import ReactDOM from "react-dom"; import Dome from "./reactDome.js" ReactDOM.render( <Dome msg = "this is react"/>, document.getElementById('root') )
reactDome.js
import React from "react"; class State extends React.Component { constructor(props) { super(props); } render() { return ( <div>{this.props.msg}</div> ) } } export default State;
组件props默认值、验证
react
import React from "react"; import ReactDOM from "react-dom"; class State extends React.Component { static defaultProps = { msg: 'I am react defaultProps' } constructor(props) { super(props); } render() { return ( <div>{this.props.msg}</div> ) } } ReactDOM.render( <State/>, document.getElementById('root') )
vue
app.vue
<template> <div>{{ msg }}</div> </template> <script> export default { props: { msg: { type: Number, default: 0, } } } </script>
main.js
import Vue from 'vue' Vue.config.productionTip = false import App from '../src/components/app.vue' /* eslint-disable no-new */ new Vue({ el: '#app', template: '<App msg="dsadsda"/>', components: { App } })
class和style的赋值
react
import React from "react"; import ReactDOM from "react-dom"; require('./App.css') class From extends React.Component{ constructor(){ super(); this.state = { className : 'mystyle' } } render() { let style = { color:'#333', fontSize:50, } return( <div> <p class={this.state.className}>11111</p> <p style={style}>2222</p> </div> ) } } ReactDOM.render( <From></From>, document.getElementById('root') );
vue
<template> <div> <p :class="className"> class动态 </p> <p :style = "mystyle"> style动态 </p> </div> </template> <script> export default { data(){ return { className : 'mystyle', mystyle : { color:'#333', fontSize:'50px', } } } } </script> <style> .mystyle{ color:#f00; } </style>
- 在这里有一点要记住，react可以自动增加px尾缀，vue不会
事件
react
import React from "react"; import ReactDOM from "react-dom"; class App extends React.Component { constructor(){ super(); this.clickfunc = this.clickfunc.bind(this); this.state = { tar : true, } } clickfunc(){ this.setState({ tar:!this.state.tar }) } render() { return ( <div onClick={this.clickfunc}>{this.state.tar?'点我':'再点我'}</div> ) } } ReactDOM.render( <App></App>, document.getElementById('root') )
vue
<template> <button @click="clickfunc">{{ msg }}</button> </template> <script> export default { data(){ return { msg : '点我', tar : true, } }, methods:{ clickfunc(){ this.msg = this.tar?'在点我':'点我'; this.tar = !this.tar; } } } </script>
表单双向绑定
react
import React from "react"; import ReactDOM from "react-dom"; class Module extends React.Component { constructor(){ super(); this.state = { value:'react is good', }; this.changeFrom = this.changeFrom.bind(this); } changeFrom(event){ this.setState({ value : event.target.value }) } render(){ return ( <div> <input value = {this.state.value} onChange = {this.changeFrom}/> <p>{this.state.value}</p> </div> ) } } ReactDOM.render( <Module></Module>, document.getElementById('root') );
vue
<template> <div> <input v-model="value"/> <p>{{ value }}</p> </div> </template> <script> export default { data(){ return { value:"vue is good" } } } </script> <style> </style>
条件渲染模版
react
import React from "react"; import ReactDOM from "react-dom"; class Module1 extends React.Component{ render(){ return ( <div>我是模版1</div> ) } } class Module2 extends React.Component { render() { return ( <h1>我是模版2</h1> ) } } class Module extends React.Component{ constructor(){ super(); this.state = { tar : true } this.changeModule = this.changeModule.bind(this); } componentWillUpdate(){ console.log(this.state.tar) } changeModule(){ this.setState(s => ({ tar : !s.tar })) // console.log(this.state.tar); } render(){ if(this.state.tar){ return ( <div> <button onClick={this.changeModule}>切换模版</button> <Module1/> </div> ) }else{ return ( <div> <button onClick={this.changeModule}>切换模版</button> <Module2 /> </div> ) } } } ReactDOM.render( <Module/>, document.getElementById('root') )
vue
App.vue
<template> <div> <div v-if="show"> 我是模版一 </div> <div v-if="!show"> 我是模版二 </div> <button @click="changeModule">模版切换</button> </div> </template> <script> export default { data(){ return { show:false } }, methods:{ changeModule(){ this.show = !this.show } } } </script> <style> </style>
mainjs
import Vue from 'vue' Vue.config.productionTip = false import App from './App.vue' /* eslint-disable no-new */ let cpt=new Vue({ el: '#app', template: '<App/>', components: { App }, })
列表渲染
react
这里写了一个点击按钮增加一个的方法，也不知道当时怎么想的 反正就是写了不需要的小伙伴删了就好
import React from "react"; import ReactDOM from "react-dom"; class Module extends React.Component { constructor(props) { super(props); } render() { var listtpl = this.props.listarr.map((todo, index) => <li key={index}>{todo}</li> ) return ( <ul>{listtpl}</ul> ) } } class AddModule extends React.Component{ constructor(){ super(); this.state={ listarr: [1, 2, 3, 4, 6, 7], } this.add=this.add.bind(this); } add(){ this.setState(s =>({ listarr: s.listarr.concat([this.state.listarr.length+2]) })) console.log(this.state.listarr) } render(){ return ( <div> <Module listarr={this.state.listarr}/> <button onClick = {this.add} >添加</button> </div> ) } } ReactDOM.render( <AddModule/>, document.getElementById('root') )
vue
<template> <ul> <li v-for="(i,k) in arr">{{k+' => '+i}}</li> </ul> </template> <script> export default { data(){ return { arr:[1,2,3,5,6,7] } } } </script>
组件声明周期函数
react
import React from "react"; import ReactDOM from "react-dom"; import { setInterval } from "timers"; class State extends React.Component { static defaultProps = { msg: 'I am react defaultProps' }; //项目一开始调用 constructor(props) { super(props); this.state = { msg:11, msg2: props.msg } this.func = this.func.bind('this') } func(){ console.log(1); } //在初始化渲染执行之前立刻调用 componentWillMount(){ console.log('组件将要挂载'); //在这里使用setstate会让实例使用这个state this.setState({ msg: 'react componentWillMount' }); } //在初始化渲染执行之后立刻调用一次， componentDidMount(){ console.log('组件已经挂载完成'); } //组件更新时候调用 componentWillReceiveProps(){ console.log('组件props更改了'); this.setState({ msg2 : this.props.msg }) } shouldComponentUpdate(){ console.log('组件props更改了，即将渲染了') //需要提供返回值为true或者false false就不渲染了 return true; // return false; } //在shouldComponentUpdate之后 componentWillUpdate(){ console.log('现在有一个props或者state更新了') } componentDidUpdate(){ console.log('props更新完毕了') } componentWillUnmount(){ console.log('组件从dom移除了'); } render() { return ( <div>{this.state.msg +'+++++++' +this.state.msg2}</div> ) } } class App extends React.Component{ constructor(){ super(); this.state = { msg:'hellow', }; this.handleChange = this.handleChange.bind(this); } handleChange(event) { this.setState({ msg: event.target.value }); } render(){ return ( <div> <input type="text" value={this.state.msg} onChange={this.handleChange} /> <State msg = {this.state.msg}/> </div> ) } } ReactDOM.render( <App/>, document.getElementById('root') )
vue
<template> <div> <p>Data内容{{ msg }}</p> <input type="text" v-model.lazy="msg"> </div> </template> <script> export default { data(){ return { msg:1, } }, beforeCreate(){ console.log('组件实例话'); }, beforeMount(){ console.log('在挂载完成之后被调用'); }, created(){ console.log('组件挂载完成之后被调用，但是比beforeMount更早一点'); }, mounted(){ this.$nextTick(function () { console.log('推荐在nextTick里面走函数，防止子组件没挂载完成'); }) console.log(this.$el); }, beforeUpdate(){ console.log('数据更新开始了,'+this.msg); }, updated(){ console.log('数据更新完成了') }, beforeDestroy(){ console.log('实例销毁之前之前调用') }, beforeDestroy(){ console.log('Vue 实例销毁后调用') } } </script> <style> </style>