<!DOCTYPE html>
<html lang="en"> <head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<!--1.导入Vue的包-->
<script src=" https://cdn.jsdelivr.net/npm/vue"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/animate.css/3.7.0/animate.min.css">
<!-- 入场 bounceIn 离场bounceOut -->
</head> <body>
<div id="app">
<input type="button" value="toggle" @click="flag=!flag">
<!-- 需求：点击按钮，让h3显示，再点击，让h3隐藏 -->
<!-- <transition enter-active-class="animated bounceIn" leave-active-class="animated bounceOut">
<h3 v-if="flag">这是一个H3</h3>
</transition> --> <!-- 使用 :duration="毫秒值" 来统一设置入场和离场时候的动画时长 -->
<!-- <transition enter-active-class="bounceIn" leave-active-class="bounceOut" :duration="200">
<h3 v-if="flag" class="animated">这是一个H3</h3>
</transition> --> <!-- 使用 :duration="{ enter:200,leave:400}" 来分别设置 入场的时长和离场的时长 -->
<transition enter-active-class="bounceIn" leave-active-class="bounceOut" :duration="{ enter:200,leave:400}">
<h3 v-if="flag" class="animated">这是一个H3</h3>
</transition> </div> <script>
//创建 Vue 实例，得到 ViewModel
var vm = new Vue({
el:'#app',
data:{
flag:false
},
methods:{}
});
</script>
</body>
</html>