<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script src="https://cdn.staticfile.org/vue-resource/1.5.1/vue-resource.min.js"></script>
<style>
.v-enter,
.v-leave-to{
opacity:0;
transform:translateX(150px);
}
.v-enter-active,
.v-leave-active{
transition:all 0.4s ease;
}
</style>
</head>
<body>
<div id="app">
<input type="button" value="toggle" @click="flag=!flag">
<transition>
<h3 v-if="flag">这是一个h3</h3>
</transition>
</div>
<script>
var app = new Vue({
el:"#app",
data:{
flag:false
},
methods:{
}
});
</script>
</body>
</html>