源代码:
<!DOCTYPE html> <html> <head> <style> .ancestors * { display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px; } </style> <script src="http://libs.baidu.com/jquery/1.10.2/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 (great-great-grandparent) <div style="width:500px;">div (great-grandparent) <ul id="dom">ul (second ancestor - second grandparent) <ul id="dom">ul (first ancestor - first grandparent) <li>li (direct parent) <span>span</span> </li> </ul> </ul> </div> </body> </html>
运行结果：