SOURCE

var app = new Vue({
  el: '#app',
  data() {
    return {
      myArray: [{id:1, name: 'aa'}],
      myArray2: [],
      show: true
    }
  }, 
  methods: {

  }
});

<div id="app">
 <button @click="show = !show">
    Toggle render
</button>
<transition name="bounce" :appear = 'true'>
    <p v-if="show">hello</p>
  </transition>
</div>

.bounce-enter-active {
  animation: bounce-in .5s;
}
.bounce-leave-active {
  animation: bounce-in .5s reverse;
}
@keyframes bounce-in {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.5);
  }
  100% {
    transform: scale(1);
  }
}