<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
</head>
<body>
<div id="app">
{{ message }}
<input type="text" name="" id="" v-model="mytext">
<button @click="add">btn</button>
<div v-show="datalist.length">
<ul>
<li v-for="(data,index) in datalist">
{{data}}
<button @click="del(index)">del</button>
</li>
</ul>
</div>
<div v-show="!datalist.length">
empty
</div>
</div>
</body>
<script>
var app = new Vue({
el: '#app',
data: {
datalist:["123","234","567"],
message: 'Hello Vue!',
mytext:""
},
methods: {
add(){
// alert("11");
this.datalist.push(this.mytext);
},
del(index){
console.log(index);
this.datalist.splice(index,1)
}
},
})
</script>
</html>