console 命令行工具 X clear

console

new Vue({
  el: '#app',
  data : {
     lgfwidth : '120',
     lgfheight : '120px',
    beijing:'#ddd',
    lgfzihao : '20px;'
  }
})

<div id="app">
  <div v-bind:style="{width:lgfwidth+'px', height:lgfheight,background:beijing,fontSize:lgfzihao}">
    我叫刘国富
  </div>
  <input type="text" v-model="lgfwidth" />
</div>