源代码:
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("p").filter(".url").css("background-color","yellow"); }); </script> </head> <body> <h1>欢迎访问我的主页</h1> <p>Wfuyu教程 (index 0).</p> <p class="url">http://www.wfuyu.com (index 1)。</p> <p>google (index 2).</p> <p class="url">http://www.google.com (index 3)。</p> </body> </html>
运行结果：