vue组件核心:事件
<body>
<div class="app">
<todo-list></todo-list>
{{message}}--{{message+','+message}}
<div :id='message' v-if="showMessage">{{title}}</div>
<div v-else style="text-decoration: line-through;">{{title}}--{{title}}</div>
<div :id='message' v-show="showMessage">{{title}}</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
Vue.component('todo-item', {
props: {
title: String,
prize: {
type: Number,
default: 40
}
},
template: `<li>
<button @click="handleClick">删除</button>
课程名:{{title}}
价格:{{prize}}
</li>`,
data: function () {
return {}
},
methods: {
//按钮点击事件
handleClick(){
console.log("handleClick");
//向父组件的@delete事件传递this.title参数,在父组件中delete(var){}即可接收到此参数
this.$emit('delete',this.title);
}
}
})
Vue.component('todo-list', {
template: `
<ul>
<todo-item @delete="handleDelete" v-for="item in classList" :title="item.title" :prize="item.prize"></todo-item>
</ul>
`,
methods:{
//@delete对应的事件
handleDelete(val){
console.log("handleDelete",val);
}
},
data: function () {
return {
classList: [
{
title: '课程1',
prize: 50
},
{
title: '课程2',
prize: 80
}
]
}
}
})
var vm = new Vue({
el: '.app',
data: {
message: 'hello world',
showMessage: false,
title: "是否删除",
}
})
</script>
</body>
- 还有一些事件修饰符，比方说 v-on:keyup.enter="submit" 监听键盘enter键调用submit方法
- 阻止单击事件继续传播 v-on:click.stop=""