【JavaScript】Vue/React/JQuery代码对比 分别实现TodoList
Vue
<body> <div id="app">div> <script> const Add = { props: ['size'], data() { return { value: '' } }, template: ` <div> <input v-model="value"/> <button @click="$emit('add', value)">Add ({{size}})</button> </div> ` } const List = { props: ['list'], template: ` <ul> <li v-for="(v, i) of list" :key="i">{{v}}</li> </ul> ` } const App = { components: { Add, List }, data: { list: [] }, computed: { size() { return this.list.length } }, methods: { add(value) { if (value != '') this.list.unshift(value) } }, template: ` <div> <h1>Todo List</h1> <Add :size="size" @add="add"></Add> <List :list="list"></List> </div> ` } new Vue(App).$mount('#app') script> body>
React
JQuery
<body> <h1>Todo Listh1> <input type="text"> <button id="btn">Add (<span>span>)button> <ul id="list">ul> <script> (() => { const ul = $('#list') const btn = $('#btn') btn.find('span').text(ul.find('li').length) btn.click(function () { ul.prepend( `<li>${$(this).prev().val()}</li>` ) $(this).find('span').text(ul.find('li').length) }) })() script> body>