详细请参考官网:状态过渡 — Vue.js (vuejs.org)
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>列表过渡</title>
<script src="../js/vue.js"></script>
</head>
<style>
.v-enter, .v-leave-to{
opacity: 0;
}
.v-enter-active, .v-leave-active{
transition: opacity 1s;
}
</style>
<body>
<div id="app">
<transition-group>
<div v-for="item of list" :key="item.id">
{{item.title}}
</div>
</transition-group>
<button @click="but">增加</button>
</div>
<script>
var count = 0;
var app =new Vue({
el:"#app",
data:{
list:[]
},
methods:{
but:function(){
this.list.push({
id:count++,
title:"你好世界"
})
}
}
})
</script>
</body>
</html>