组件化todolist
一 概念
- 通过发送事件请求的方式进行数据传递
```html
<div id="app">
<global-tag @send_action='receiveAction'></global-tag>
</div>
<script type="text/javascript">
Vue.component('global-tag', {
data () {
return {
sub_data1: "数据1",
sub_data2: '数据2'
}
},
template: '<div @click="clickAction">发生</div>',
methods: {
clickAction () {
this.$emit('send_action', this.sub_data1, this.sub_data2)
}
}
})
new Vue({
el: '#app',
methods: {
receiveAction (v1, v2) {
console.log(v1, v2)
}
}
})
</script>
```
## 六、父子组件实现todoList
```html
<div id="app">
<div>
<input type="text" v-model='value'>
<button @click='click'>提交</button>
</div>
<ul>
<item
v-for='(e, i) in list'
:key='i'
:ele='e'
:index='i'
@delete='deleteAction'
></item>
</ul>
</div>
<script type="text/javascript">
Vue.component('item', {
props: ['ele', 'index'],
template: '<li @click="item_click">{{ ele }}</li>',
methods: {
item_click: function () {
this.$emit('delete', this.index)
}
}
})
new Vue({
el: '#app',
data: {
value: '',
list: [],
},
methods: {
click: function () {
this.list.push(this.value)
this.value = ''
},
deleteAction: function (index) {
this.list.splice(index, 1)
}
}
})
</script>
```二 代码示范
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>todoList案例</title>
</head>
<body>
<div id="app">
<div>
<input type="text" v-model="val">
<button type="button" @click="submitMsg">提交</button>
</div>
<ul>
<!-- <li v-for="(v, i) in list" :key="i" @click="removeMsg(i)">{{ v }}</li> -->
<todo-list v-for="(v, i) in list" :key="i" :v="v" :i="i" @delect_action="delect_action"></todo-list>
</ul>
</div>
</body>
<script src="js/vue-2.5.17.js"></script>
<script type="text/javascript">
Vue.component("todo-list", {
template: "<li @click='delect_action'><span>第{{ i + 1 }}条: </span><span>{{ v }}</span></li>",
props: ['v', 'i'],
methods: {
delect_action () {
this.$emit("delect_action", this.i)
}
}
})
new Vue({
el: "#app",
data: {
val: "",
list: []
},
methods: {
submitMsg () {
// 往list中添加input框中的value
if (this.val) {
this.list.push(this.val);
this.val = ""
}
},
delect_action(index) {
this.list.splice(index, 1)
}
}
})
</script>
</html>
