<!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>vue 入门</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<div>
<input type="text" v-model="inputValue">
<button @click="add">提交</button>
</div>
<ul>
<todo-item
v-for="(item,index) in list"
:content="item"
:key="index"
:index="index"
@delete="del"
>
</todo-item>
<!-- 子组件要传递值到父组件 通过 this.$emit传递一个事件到父组件 父组件触发
后 再触发父组件的方法，delete事件就是中间事件 handelclick子组件的点击 del父组件的点击 -->
<!-- <li v-for="(item,index) in list" :key="index" @dblclick="handelClick"> {{ item }}</li> -->
</ul>
</div>
<script>
Vue.component('todo-item',{
props:['content','index'],
template:"<li @dblclick='handelClick'>{{content}}</li>",
methods:{
handelClick(){
this.$emit('delete',this.index)
}
}
})
new Vue({
el:"#app",
data:{
inputValue:'',
list:[]
},
methods:{
add() {
this.list.push(this.inputValue)
this.inputValue = ''
},
del(index){
this.list.splice(index,1)
}
}
})
</script>
</body>
</html>
vue父子组件传值例子
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