<!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>
<body>
<div id="app">
<label>
抽煙:<input type="checkbox" value="抽煙" @change="handleChange($event)"/>
</label>
<label>
喝酒:<input type="checkbox" value="喝酒" @change="handleChange($event)"/>
</label>
<label>
燙頭:<input type="checkbox" value="燙頭" @change="handleChange($event)"/>
</label>
<label>
大保健:<input type="checkbox" value="大保健" @change="handleChange($event)"/>
</label>
<p v-for="item in checkVal">{{item}}</p>
</div>
</body>
</html>
<script src="./vue.js"></script>
<script>
new Vue({
el:"#app",
data:{
checkVal:[]
},
methods:{
handleChange(e){
let val = e.target.value;
let flag = this.checkVal.includes(val);
if(flag){
var index = this.checkVal.indexOf(val);
this.checkVal.splice(index,1)
}else{
this.checkVal.push(val);
}
}
}
})
</script>
