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<!DOCTYPE html> <meta charset="utf-8"> <link href="/static/next/css/tryit.css?v=2017082407" rel="stylesheet"/> <script src="https://cdn.staticfile.org/jquery/2.2.4/jquery.min.js"></script> <style> .ancestors *{ display: block; border: 2px solid lightgrey; color: lightgrey; padding: 5px; margin: 15px; } </style> <script> $(document).ready(function(){ $("ul").find("span").css({"color":"red","border":"2px solid red"}); }); </script> <body class="ancestors">body (曾祖先节点) <div style="width:500px;">div (祖先节点) <ul>ul (直接父节点) <li>li (子节点) <span>span (孙节点)<span>span (曾孙节点)<span>span (曾曾孙节点)</span></span></span> </li> <li>li (子节点) <span>span (孙节点)</span> </li> </ul> </div> <footer>简单教程，简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
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