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代码编辑器：
<!DOCTYPE html> <style> .ancestors * { display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px; } </style> <script> $(document).ready(function(){ $("span").parents("ul").css({"color":"red","border":"2px solid red"}); }); </script> <body class="ancestors">body (great-great-grandparent) <div style="width:500px;">div (great-grandparent) <ul>ul (grandparent) <li>li (direct parent) <span>span</span> </li> </ul> </div> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
运行结果：