<style>
.fade-enter{
opacity:0;
}
.fade-enter-active{
transition: opacity 4s;
}
.fade-leave-to{
opacity:0;
}
.fade-leave-active{
transition: opacity 3s;
}
</style>
</head>
<body>
<div id="root">
<transition name="fade">
<div v-if="show">hello world</div>
</transition>
<button @click='handleClick'>切换</button>
</div>
<script>
var vm = new Vue({
el: "#root",
data: {
show: true
},
methods: {
handleClick: function() {
this.show = !this.show
}
}
})
</script>
</body>
如图所示
