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3-3 v-on for Custom Events.html
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3-3 v-on for Custom Events.html
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<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="vue.js"></script>
<meta charset="UTF-8">
<title>vue.js</title>
<style>
.component3 {
margin: 10px 10px 10px 100px;
display: block;
background-color: #ffcc66;
}
.component2 {
background-color: yellow;
padding: 10px;
margin: 10px;
}
</style>
</head>
<body>
<!-- 最小的组件模板-->
<template id="component3">
<div class="component3">
<br> 组件 c3
<input v-model="msg">
<button @click="c3_do1">c3 广播事件至根组件</button>
<button @click="c3_do2">c3 $parent 设定资料</button>
<button @click="c3_do3">c3 $root 设定资料</button>
<button @click="c3_do4">c3 all_events 事件</button>
<button @click="c3_do5">c3 all_events1事件</button>
</div>
</template>
<!-- 子组件模板 -->
<template id="component2">
<div class="component2">
<p>组件 c2 msg: {{ msg | json }}</p>
<input v-model="msg">
<button v-on:click="c2_do1">c2 广播事件至根组件</button>
<button v-on:click="c2_do2">c2 清空 $parent 资料</button>
<button v-on:click="c2_do3">c2 eventc2 事件</button>
<button v-on:click="c2_do4">c2 eventc3 事件</button>
<button v-on:click="c2_do5">c2 eventc4 事件</button>
<component3></component3>
</div>
</template>
<!-- 根组件模板 -->
<div id="component1">
<hr>
<p>根组件 Messages: {{ messages | json }}</p>
<button v-on:click="c1_do1">组件 c2[0] 设值 子组件的资料 </button>
<button v-on:click="c1_do2">组件 c2[1] 设值 子组件的资料 </button>
<button v-on:click="c1_do3">组件 c2[2] 设值 子组件的资料 </button>
<c2 v-on:eventc4="handle_it2"></c2>
<c2 v-on:eventc2="handle_it"></c2>
<c2 v-on:eventc3="handle_it1"></c2>
</div>
<div id="app">
<my-component></my-component>
</div>
<script>
Vue.component('component3', {
template: '#component3',
data: function() {
return {
msg: 'c3 台湾小凡',
}
},
methods: {
'c3_do1': function() {
if (this.msg.trim()) {
this.$dispatch('c1_events', this.msg)
this.msg = ''
}
},
'c3_do2': function() {
this.$parent.$set('msg', "设定子组件完成");
},
'c3_do3': function() {
this.$root.messages.push(this.msg);
this.msg = '';
},
'c3_do4': function() {
this.$dispatch('all_events', this.msg);
},
'c3_do5': function() {
this.$dispatch('all_events1', this.msg);
}
}
});
// 注册子组件
// 将当前消息派发出去
Vue.component('c2', {
template: '#component2',
data: function() {
return {
msg: 'c2 感谢 群友'
}
},
methods: {
'c2_do1': function() {
if (this.msg.trim()) {
this.$dispatch('c1_events', this.msg)
this.msg = ''
}
},
'c2_do2': function() {
this.$parent.messages = [];
},
'c2_do3': function() {
this.$dispatch('eventc2', this.msg)
},
'c2_do4': function() {
this.$dispatch('eventc3', this.msg)
},
'c2_do5': function() {
this.$dispatch('eventc4', this.msg)
},
},
events: {
'all_events': function(msg) {
console.log('all_events c2:' + msg);
return true;
},
'all_events1': function(msg) {
console.log('all_events1 c2:' + msg);
},
'eventc2': function(msg) {
console.log('eventc2:' + msg);
},
'eventc3': function(msg) {
console.log('eventc3:' + msg);
},
'eventc4': function(msg) {
console.log('eventc4:' + msg);
}
}
});
// 初始化父组件
// 将收到消息时将事件推入一个数组
var Parent = new Vue({
el: '#component1',
data: {
messages: []
},
// 在创建实例时 `events` 选项简单地调用 `$on`
events: {
'c1_events': function(msg) {
// 事件回调内的 `this` 自动绑定到注册它的实例上
this.messages.push(msg)
console.log('c1_events:' + msg);
},
'all_events': function(msg) {
console.log('all_events Praent:' + msg);
},
'all_events1': function(msg) {
console.log('all_events1 Praent:' + msg);
}
},
methods: {
'c1_do1': function() {
this.$emit('c1_events', 'Parent events do')
this.$children[0].msg = '组件c2[0]设值';
},
'c1_do2': function() {
this.$children[1].msg = '组件c2[1]设值';
},
'c1_do3': function() {
this.$children[2].msg = '组件c2[2]设值';
},
'handle_it': function() {
console.log('Parent Handle It');
this.messages.push('HandleIt');
},
'handle_it1': function() {
console.log('Parent Handle It1');
this.messages.push('HandleIt1');
},
'handle_it2': function() {
console.log('Parent Handle It2');
this.messages.push('HandleIt2');
}
}
});
var vm = new Vue({
el: '#app',
components: {
'my-component': Parent
},
ready() {
this.$on('events3', function(msg) {
console.log(msg);
});
},
events: {
'events4': function(msg) {
console.log(msg);
}
}
});
vm.$on('events1', function(msg) {
console.log(msg);
});
vm.$once('events1-once', function(msg) {
console.log('once:' + msg);
});
//vm.$emit('events1', 'events1 do 1');
//vm.$emit('events1', 'events1 do 2');
//vm.$emit('events1-once', 'events1-once do1');
//vm.$emit('events1-once', 'events1-once do2');
//vm.$emit('events3', 'events3 do 1');
//vm.$emit('events3', 'events3 do 2');
//vm.$emit('events4', 'events4 do 1');
//vm.$emit('events4', 'events4 do 2');
</script>
</body>
</html>