<template>
<div id="list-demo">
<button v-on:click="add">Add</button>
<button v-on:click="remove">Remove</button>
<transition-group name="list" tag="p">
<span v-for="item in items" v-bind:key="item" class="list-item">
{{ item }}
</span>
</transition-group>
</div>
</template>
<script>
export default {
name: 'home',
data () {
return {
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)
}
}
}
</script>
<style lang="scss">
.list-item {
display: inline-block;
margin-right: 10px;
}
.list-enter-active, .list-leave-active {
transition: all 1s;
}
.list-enter, .list-leave-to {
opacity: 0;
transform: translateY(30px);
}
</style>
