vue双向数据绑定的简单实现

vue双向数据绑定的简单实现

参考教程：链接

<!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>
</head>
<body>
    <div id="app">
     <input type="text" id="txt">
     <p id="show-txt"></p>
    </div>
    <script>
     var obj = {}
     Object.defineProperty(obj, 'txt', {
      get: function () {
       return obj
      },
      set: function (newValue) {
       document.getElementById('txt').value = newValue
       document.getElementById('show-txt').innerHTML = newValue
      }
     })
     document.addEventListener('keyup', function (e) {
      obj.txt = e.target.value
     })
    </script>
   </body>
</html>

 

posted @ 2018-09-27 16:08  EthanCheung  阅读(106)  评论(0)  编辑  收藏  举报