vue渲染json不出数据

Question

<div id="example" v-show="willShow">

  <div class="theme-popover" >

    <div id="app">

      <span v-text="status"></span>

      <div v-for="d in data">{{d.site_id}}:<span>{{d.site_name}}</span></div>

    </div>

  </div>

</div>