console 命令行工具 X clear

console

const app = new Vue({
  el:"#app",
  data:{
    firstName:"弗拉基米尔",
    middleName:"伊里奇",
    lastName:"乌里扬诺夫"
  }
})

<div id="app">
  <div>{{firstName}}·{{middleName}}·{{lastName}}</div>
  <div>{{firstName + "·" + middleName + "·" + lastName}}</div>
</div>

#app{color:#fff}