SOURCE

var v = new Vue({
  el: "#demo1",
  data: {
    name: ""
  }
});

var v1 = new Vue({
  el:'#arr',
  data:{
    list:[
      {name:'test1'},
      {name:'test2'}
    ]
  }
});

<div id="demo1">
  <p>
    我是:{{name}}
  </p>
  <input type="text" name="username" value="" v-model="name">
</div>


<div id='arr'>
  数组测试:
  <ol>
    <li v-for="v in list">
      {{v.name}}
    </li>
  </ol>
</div>