SOURCE

// 输出请看 右下角 Console 命令行工具
const list  = []
for(let i = 0; i < 50000; i++) {
  list.push(i);
}
const beginTime = +new Date();
new Vue({
  el: '#component-demo',
  data: {
    list: list,
    name: 'Hello'
  },
  methods:{
    click(index){
      const list = new Array(50000);
      list[index] = 'test'
      this.list = list
    }
  },
  mounted(){
    const endTime = +new Date();
	  console.log((endTime - beginTime) / 1000,1);
  }
})

<script src="https://unpkg.com/vue"></script>

<div id="component-demo" class="demo">
  <div v-for="(d, i) in list" @click="click(i)"> 
    <span>
      <span> 
        <span>
          <span>
            Hello {{name}} {{i}} {{d}}!
          </span>
        </span>
      </span>
    </span>
  </div>
</div>