vue key值 报错 Avoid using non-primitive value as key, use string/number value instead.
<!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>Document</title>
</head>
<style>
</style>
<script src="https://cdn.bootcss.com/vue/2.6.10/vue.js"></script>
<script src="https://cdn.bootcss.com/axios/0.18.0/axios.js"></script>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.3.1/css/bootstrap.css" rel="stylesheet">
<body>
<div id="app">
ID：<input type="text" v-model='name'>
NAME：<input type="text" v-model='id'>
<button @click='add'>添加</button>
<p v-for="(item,index) in list" :key="item.id"> //只写item会报错，不能绑对象
{{item.name}}-----{{item.id}} <input type="checkbox" value="">
</p>
</div>
<script>
var vm = new Vue({
el: '#app',
data: {
name:'',
id:'',
list:[
{ id:1,name:'小明'}, { id:2,name:'小明2'}, { id:3,name:'小明3'}
]
},
methods: {
add(){
this.list.unshift({name:this.name,id:this.id})
}
}
});
</script>
</body>
</html>
