> 子组件中使用 $emit('tt') #### 1. 示例一 --- ```html <div id="app"> <parent @tt="go"></parent> {{ msg }} </div> <script> var par = { template: `<div> <button @click="$emit('tt', 'liang')">点我</button> </div>` } let vm = new Vue({ el: '#app', data: { msg: 'init' }, components: { parent: par }, methods: { go: function(name){ this.msg = name } } }) </script> ``` #### 2. 示例二 --- ```html <div id="app"> <parent :arts="artList" @change-title="changeTitle"></parent> {{ msg }} </div> <script> var par = { template: ` <ul> <li v-for="art in arts"> <span>{{ art.title }}</span> <button @click="$emit('change-title', art.title)">点我</button> </li> </ul> `, props: ['arts'] } let vm = new Vue({ el: '#app', data: { msg: '', artList: [ { title: '红色' }, { title: '绿色' }, { title: '蓝色' } ] }, components: { parent: par }, methods: { changeTitle: function(title){ this.msg = title } } }) </script> ```