如何用Vue模拟v-model 

<!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>
            抽烟:<input type="checkbox" value="抽烟" @change="handleChange($event)"/>
        </label>
        <label>
            喝酒:<input type="checkbox" value="喝酒" @change="handleChange($event)"/>
        </label>
        <label>
            烫头:<input type="checkbox" value="烫头" @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>

 

posted @ 2019-07-22 09:53  前端小菜鸟吖  阅读(1071)  评论(1)    收藏  举报