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03jquery转化为dom对象的实例,length和size

03jquery转化为dom对象的实例,length和size

作者: An的杂货铺 | 来源:发表于2019-03-11 14:50 被阅读0次
<!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>
  <style>
       * {
           padding: 0;
           margin: 0;
       }

       div {
           width: 100px;
           height: 100px;
           background-color: skyblue;
           position: relative;
           left: 0;
       }
  </style>
</head>
<body>
  <div id="box1">文字1</div>
  <div id="box2">文字2</div>
  <script src="./jquery-1.12.1.min.js"></script>
  <script>
      // 类数组对象
      console.log($("div"))
      $("div")[0].innerHTML = "hello";
      console.log($("div").length);//2
      console.log($("div").size());//2
      
  </script>    
</body>
</html>

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