CodePen Embed - v2：v-cloak

<div id="app" v-cloak>
    <h2>{{message}}</h2>
  </div>

  [v-cloak] {
    width:200px;
    heigth:200px;
    background: skyblue;
    }

setTimeout(function () {
      const app = new Vue({
        el: '#app',
        data: {
          message: '你好啊'
        }
      })
    },1000)

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