fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <style> .ancestors *{ display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px; } </style> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> $(document).ready(function(){ var listItemII=document.getElementById("dom"); $("li").closest("ul",listItemII).css({"color":"red","border":"2px solid red"}); }); </script> </head> <body class="ancestors">body (曾曾祖先节点) <div style="width:500px;">div (曾祖先节点) <ul id="dom">ul (第二祖先 - 第二个祖先节点) <ul id="dom">ul (第一祖先 - 第一个祖先节点) <li>li (直接父节点) <span>span</span> </li> </ul> </ul> </div> </body> </html>
运行结果