参考地址 Vue FLIP简单实现及理解 vue-flip翻转组件的 demo Vue Flip
//HTML
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.14.1/lodash.min.js"></script>
<div id="list-complete-demo" class="demo">
<button v-on:click="shuffle">Shuffle</button>
<button v-on:click="add">Add</button>
<button v-on:click="remove">Remove</button>
<transition-group name="list-complete" tag="p">
<span
v-for="item in items"
v-bind:key="item"
class="list-complete-item"
>
{{ item }}
</span>
</transition-group>
</div>//JS
new Vue({
el: '#list-complete-demo',
data: {
items: [1,2,3,4,5,6,7,8,9],
nextNum: 10
},
methods: {
randomIndex: function () {
return Math.floor(Math.random() * this.items.length)
},
add: function () {
this.items.splice(this.randomIndex(), 0, this.nextNum++)
},
remove: function () {
this.items.splice(this.randomIndex(), 1)
},
shuffle: function () {
this.items = _.shuffle(this.items)
}
}
})//CSS
.list-complete-item {
transition: all 1s;
display: inline-block;
margin-right: 10px;
}
.list-complete-enter, .list-complete-leave-to
/* .list-complete-leave-active for below version 2.1.8 */ {
opacity: 0;
transform: translateY(30px);
}
.list-complete-leave-active {
position: absolute;
}CSS代码理解：
list-complete-item{
transition:all 1s;
…
}
将该class加在transition-group 下的span中。transition效果为使产生过渡。相比于之前使用的 v-enter-active{ }有所区别。.list-complete-leave-active{
position:absolute;
}
为了使remove的时候，更平滑。所以保持了绝对位置。