console 命令行工具 X clear

console

var vm = new Vue({
  el: "#app",
  data: {
    name: "li",
    age: 23
  },
  methods: {
    calc: function() {
      console.log("计算了一次");
      return this.name
    }
  }
})

<div id="app" v-text="name+' '+ age">
  {{calc()}}
</div>