<template>
  <div class="hello">
    <ul>
      <li v-for="item in datas">
        <div :style="{fontSize:changsize()}">{{item}}</div>
      </li>
    </ul>
    <input type="text" v-model="tests">
    {{tests}}
  </div>
</template>
<script>
export default {
  name: 'HelloWorld',
  data () {
    return {
      datas:['one','two','three','one','two','three','one','two','three'],
      fz:'',
      tests:'',
    }
  },
  methods:{
    changsize(){
      return (parseInt(Math.random()*15)+10)+'px';
    }
  }
}
</script>