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自定义方法实现通过类名获取所有元素的对象集合
Lucas
Original
482 people have browsed it

通过类名获取所有元素的方法

页面代码如下：

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <title>自定义方法，实现通过类名获取对象集合</title>
  6. </head>
  7. <body>
  8.     <h1 id='one'>自定义方法，实现通过类名获取对象集合</h1>
  9.     <h2 class='one'>自定义方法，实现通过类名获取对象集合</h2>
  10.     <p class='one'>自定义方法，实现通过类名获取对象集合</p>
  11.     <div class='two one'>自定义方法，实现通过类名获取对象集合</div>
  12.     <h2 class='two'>自定义方法，实现通过类名获取对象集合</h2>
  13.     <h2 class='tree one'>自定义方法，实现通过类名获取对象集合</h2>
  14.     <h2 class='tree two'>自定义方法，实现通过类名获取对象集合</h2>
  16.     <script>
  17.         var x=document.getElementsByClassName('one'); //x是一个对象集合的数组
  19.         for(i = 0; i < x.length; i++){
  20.             x[i].style.background='green';
  21.             x[i].style.color = 'yellow'
  22.         }
  23.         console.log(x)
  24.     </script>
  25. </body>
  26. </html>

结果如下：

Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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