console 命令行工具 X clear

console

var app = new Vue({
  el: '#app',
  data: {
    name: '大雄',
    attr: 'hello'
  },
  computed: {
    computedAttr: function () {
      return this.attr + ' world'
    }
  }
})

<div id="app">
  <input v-model="computedAttr" type="text" name="" id="" />
</div>