vue中渐进过渡效果实现

Vue.transition('stagger', {
 stagger: function (index) {
 // 每个过渡项目增加 50ms 延时
 // 但是最大延时限制为 300ms
 return Math.min(300, index * 50)
 }
})

<div id="demo">
 <input v-model="query">
 <ul>
  <li v-for="item in list | filterBy query"
   transition="staggered"
   stagger="100">
   {{item.msg}}
   </li>
 </ul>
</div>

new Vue({
 el: '#demo',
 data: {
  query: '',
  list: [
   { msg: 'Bruce Lee' },
   { msg: 'Jackie Chan' },
   { msg: 'Chuck Norris' },
   { msg: 'Jet Li' },
   { msg: 'Kung Fury' }
  ]
 }
})

ul {
 padding-left: 0;
 font-family: Helvetica, Arial, sans-serif;
}
.staggered-transition {
 transition: all .5s ease;
 overflow: hidden;
 margin: 0;
 height: 20px;
}
.staggered-enter, .staggered-leave {
 opacity: 0;
 height: 0;
}