@keyframes动画和animate.css

 <style>
      @keyframes bounce-in {
        0%{
          transform: scale(0);
        }
        50%{
          transform: scale(1.5);
        }
        100%{
          transform: scale(1);
        }
      }
      .fade-enter-active{
        transform-origin: left center;
       animation: bounce-in 1s;
      }
      .fade-leave-active{
        transform-origin: left center;
        animation: bounce-in 1s reverse;
      }
  </style>
</head>
<body>
  <!-- 
    过程如下：
     显示  fade-enter,fade-enter-active      fade-enter-active,fade-enter-to     空
     隐藏  fade-leave,fade-leave-active      fade-leave-active,fade-leave-to     空
  -->
  <div id="root">
    <transition name='fade'>
      <h1 v-show='show'>
        最是年少时模样
      </h1>
    </transition>
    <button @click='change'>切换</button>
  </div>
  <script>
    var vm=new Vue({
      el:'#root',
      data:{
        show:true
      },
      methods:{
        change:function(){
          this.show=!this.show;
        }
      }
    })
  </script>
</body>

自定义类名：

<style>
      @keyframes bounce-in {
        0%{
          transform: scale(0);
        }
        50%{
          transform: scale(1.5);
        }
        100%{
          transform: scale(1);
        }
      }
      .active{
        transform-origin: left center;
       animation: bounce-in 1s;
      }
      .leave{
        transform-origin: left center;
        animation: bounce-in 1s reverse;
      }
  </style>
</head>
<body>
  <!-- 
    过程如下：
     显示  fade-enter,fade-enter-active      fade-enter-active,fade-enter-to     空
     隐藏  fade-leave,fade-leave-active      fade-leave-active,fade-leave-to     空
  -->
  <div id="root">
    <transition name='fade' 
      enter-active-class='active'
      leave-active-class='leave'
    >
      <h1 v-show='show'>
        最是年少时模样
      </h1>
    </transition>
    <button @click='change'>切换</button>
  </div>
  <script>
    var vm=new Vue({
      el:'#root',
      data:{
        show:true
      },
      methods:{
        change:function(){
          this.show=!this.show;
        }
      }
    })
  </script>
</body>

animate.css使用：

  <script src="./node_modules/vue/dist/vue.js"></script>
  <link rel='stylesheet' type="text/css" href="./animate.css">
</head>
<body>
  <!-- 
    过程如下：
     显示  fade-enter,fade-enter-active      fade-enter-active,fade-enter-to     空
     隐藏  fade-leave,fade-leave-active      fade-leave-active,fade-leave-to     空
  -->
  <div id="root">
    <transition name='fade' 
      enter-active-class='animated tada'
      leave-active-class='animated rubberBand'
    >
      <h1 v-show='show'>
        最是年少时模样
      </h1>
    </transition>
    <button @click='change'>切换</button>
  </div>
  <script>
    var vm=new Vue({
      el:'#root',
      data:{
        show:true
      },
      methods:{
        change:function(){
          this.show=!this.show;
        }
      }
    })
  </script>
</body>

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原文地址：https://www.cnblogs.com/em2464/p/12333032.html