1.列表过渡使用<transition-group>标签包裹动画元素。
2.然后对v-enter,v-leave-to,v-enter-active,v-leave-active写入css样式即可。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue中多个元素或组件的过渡</title>
<script src="./vue.js"></script>
<style>
.v-enterr,v-leave-to{
opacity:0;
}
.v-enter-active,.v-leave-active{
transition:opacity 1s;
}
</style>
</head>
<body>
<div id="root">
<transition-group>
<div v-for="item of list" :key="item.id">{{item.title}}
</div>
</transition-group>
<button @click="handleBtnClick">Add</button>
</div>
<script>
var count=0;
var vm=new Vue({
el:'#root',
data:{
list:[]
},
methods:{
handleBtnClick:function(){
this.list.push({
id:count++,
title:'hello world'
})
}
}
})
</script>
</body>
</html>