html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div id="app">
<ul v-for="(item,index) in arr" :key="item.id">
<li>{{item.id}} <button @click="del(item.id)">{{item.content}}</button></li>
</ul>
<button @click="addRandom">生成</button>
</div>
<script src="../../vue.js"></script>
<script>
const app=new Vue({
el:'#app',
data:{
// arr:[1,5,3],
arr:[
{id:1,content:'删除'},
{id:3,content:'删除'},
{id:5,content:'删除'},
]
},
methods:{
del(id){
this.arr=this.arr.filter(item=>item.id!==id)
},
addRandom(){
this.arr.push({id:Math.floor(Math.random()*20),content:'删除'})
}
}
})
</script>
</body>
</html>