fmpq.com
源代码：
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<!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 DOM=document.getElementsByClassName("greatgp"); $(".child").parentsUntil(DOM,"ul").css({"color":"red","border":"2px solid red"}); }); </script> </head> <body class="ancestors"> body (曾曾祖父节点) <div style="width:500px;" class="greatgp">div (曾祖父节点) <ul>ul (祖父节点) <li>li (直接父节点) <span class="child">span</span> </li> </ul> </div> </body> <!-- 在这个例子中,我们使用DOM在类名为“child”span元素与名称为“ancestors”div元素之间来选择ul祖先。--> </html>
运行结果