2018-09-26 指令

v-html，v-text，v-once，v-pre

<div id="app">
            <input type="text" v-model='msg'>
            <p v-html='msg'>{{msg}}</p>
            <h3 v-text='msg'>{{msg}}</h3>
               
            <a href="" v-once>{{msg}}</a>
               
            <h1 v-pre>{{msg}}</h1>
        </div>
        <script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
        <script type="text/javascript">
            new Vue({
                el:'#app',
                data:{
                    msg:'hello'
                },
                
            })
        </script>

v-cloak

<div id="app">
            <h1 v-cloak>{{msg}}</h1>
        </div>
        <script src="js/vue.js" type="text/javascript" charset="utf-8"></script>
        <script type="text/javascript">
            new Vue({
                el:'#app',
                data:{
                    msg:'hellow'
                },
                beforeMount:function(){
                    alert('awdawd')
                }
            })
        </script>