Vue中的双向数据绑定简单介绍

 1     <div id="app">
 2         <input type="text" v-model="msg" value="666"> // 表单使用v-mode时value会失效
 3         {{msg}}
 4     </div>
 5 
 6     <script src="js/vue.js"></script>
 7     <script>
 8         let vm = new Vue({
 9             el: "#app",
10             data: {
11                 msg: ‘‘
12             }
13         })
14     </script>

    <div id="app">
        <input type="radio" v-model="msg" value="man">
        <input type="radio" v-model="msg" value="woman">
        {{msg}} //msg表示选中按钮的value值
    </div>

    <script src="js/vue.js"></script>
    <script>
        let vm = new Vue({
            el: "#app",
            data: {
                msg: ‘‘
            }
        })
    </script>

    <div id="app">
        <input type="checkbox" value="html" v-model="msg">
        <input type="checkbox" value="css" v-model="msg">
        <input type="checkbox" value="javascript" v-model="msg">
        {{msg}}  //mag表示选中按钮的value值
    </div>

    <script src="js/vue.js"></script>
    <script>
        let vm = new Vue({
            el: "#app",
            data: {
                msg: []
            }
        })
    </script>

    <div id="app">
        <select v-model="msg">
            <option value="html">html</option>
            <option value="css">css</option>
            <option value="javascript">javascript</option>
        </select>
        {{msg}}
    </div>

    <script src="js/vue.js"></script>
    <script>
        let vm = new Vue({
            el: "#app",
            data: {
                msg: []
            }
        })
    </script>