 -->
    <!-- <input type="text" :value="message" @input="valueChange" > -->
    <!-- $event获取事件对象，$event.target.value获取input值 -->
    <input type="text" :value="message" @input="valueChange($event.target.value)">

    {{message}}
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue@2.6.10/dist/vue.js"></script>
  <script>
    const app = new Vue({
      el:"#app",
      data:{
        message:"zzz"
      },
      methods:{
        // valueChange(event){
        //   console.log("inp