Vue中的事件修饰符:
1.prevent:阻止默认事件(常用);
2.stop:阻止事件冒泡(常用);
3.once:事件只触发一次(常用);
4.capture:使用事件的捕获模式;
5.self:只有event.target是当前操作的元素时才触发事件;
6.passive:事件的默认行为立即执行,无需等待事件回调执行完毕;
DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>事件修饰符title>
<script type="text/javascript" src="../js/vue.js">script>
<style>
*{
margin-top: 20px;
}
.demo1{
height: 50px;
background-color: skyblue;
}
.box1{
padding: 5px;
background-color: skyblue;
}
.box2{
padding: 5px;
background-color: orange;
}
.list{
width: 200px;
height: 200px;
background-color: peru;
overflow: auto;
}
li{
height: 100px;
}
style>
head>
<body>
<div id="root">
<h2>欢迎来到{{name}}学习h2>
<a href="http://www.atguigu.com" @click.prevent="showInfo">点我提示信息a>
<div class="demo1" @click="showInfo">
<button @click.stop="showInfo">点我提示信息button>
div>
<button @click.once="showInfo">点我提示信息button>
<div class="box1" @click.capture="showMsg(1)">
div1
<div class="box2" @click="showMsg(2)">
div2
div>
div>
<div class="demo1" @click.self="showInfo">
<button @click="showInfo">点我提示信息button>
div>
<ul @wheel.passive="demo" class="list">
<li>1li>
<li>2li>
<li>3li>
<li>4li>
ul>
div>
body>
<script type="text/javascript">
Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。
new Vue({
el:'#root',
data:{
name:'123'
},
methods:{
showInfo(e){
alert('同学你好!')
// console.log(e.target)
},
showMsg(msg){
console.log(msg)
},
demo(){
for (let i = 0; i < 100000; i++) {
console.log('#')
}
console.log('累坏了')
}
}
})
script>
html>