vue 之 监听案例----1.keyup 

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script src="js/vue.js"></script>
</head>

<body>
  <div id ="app"> 
    <input type="text" v-model="firstname" @keyup='getFullName'>
    <input type="text" v-model="lastname" @keyup='getFullName'>
    <input type="text" v-model="fullname" >
  </div>

  <script>
   //创建Vue实例,得到 ViewModel
   var vm = new Vue({
    el: '#app',
    data: {
      firstname:'',
      lastname:'',
      fullname:''
    },
    methods: {
      getFullName(){
        this.fullname=this.firstname + '-' + this.lastname;
      }
    }
   });
  </script>
</body>

</html>

 

posted @ 2020-03-19 09:28  一只小菜鸟呀！  阅读(363)  评论(0)    收藏  举报