SOURCE

new Vue({
  el: '#demo',
  data: {
    list: []
  },
  created() {
    setTimeout(1000, () => {
      this.list = [{text: 1},{text: 2},{text: 3},{text: 4},{text: 5}]
    })
  }
})

<div id="demo">
  <div v-for="item in list">
    {{item.}}
  </div>
</div>

.fade-enter-active, .fade-leave-active {
  transition: opacity .5s
}
.fade-enter, .fade-leave-active {
  opacity: 0
}