10、事件修饰符
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;
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<head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>Documenttitle><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>
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<body><div id="root"><h1>欢迎来到{{name}}学习h1> <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)">div2div>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><script type="text/javascript">new Vue({el:'#root', data:{ name:'尚硅谷' },methods:{showInfo(){alert("同学你好！")},showMsg(msg){console.log(msg)},demo(){for (let i = 0; i <10000; i++){console.log('@')}console.log("累坏了") }}})script>
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