vue v-forループにおけるkey属性の使用
8621 ワード
DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Documenttitle>
<script src="./lib/vue-2.4.0.js">script>
head>
<body>
<div id="app">
<div>
<label>Id:
<input type="text" v-model="id">
label>
<label>Name:
<input type="text" v-model="name">
label>
<input type="button" value=" " @click="add">
div>
<p v-for="item in list" :key="item.id">
<input type="checkbox">{{item.id}} --- {{item.name}}
p>
div>
<script>
// Vue ， ViewModel
var vm = new Vue({
el: '#app',
data: {
id: '',
name: '',
list: [
{ id: 1, name: ' ' },
{ id: 2, name: ' ' },
{ id: 3, name: ' ' },
{ id: 4, name: ' ' },
{ id: 5, name: ' ' }
]
},
methods: {
add() { //
this.list.unshift({ id: this.id, name: this.name })
}
}
});
script>
body>
html>転載先:https://www.cnblogs.com/wanguofeng/p/11232542.html