查找邻近兄弟节点element.nextElementSibling与element.previousElementSibling案例 

 1 <!doctype html>
 2 <html lang="en">
 3 <head>
 4     <meta charset="UTF-8">
 5     <title>Document</title>
 6 
 7 </head>
 8 <body>
 9 <div>
10     <ul>
11         <li>123</li>
12         <li>123</li>
13         <li>123</li>
14         <li id="four">第四个li</li>
15         <li>123</li>
16         <li>123</li>
17         <li>123</li>
18         <li>123</li>
19         <li>123</li>
20         <li>123</li>
21     </ul>
22 </div>
23 <script>
24     let li_4 = document.getElementById('four');
25     li_4.previousElementSibling.style.backgroundColor = 'pink';
26     li_4.nextElementSibling.style.backgroundColor = 'red';
27 </script>
28 </body>
29 </html>
posted @ 2019-12-20 15:06  杨小越  阅读(280)  评论(0)    收藏  举报