W3School TIY
编辑您的代码：
<!DOCTYPE html> <html> <head> <style>p { margin:10px; padding:10px; }</style> <script type="text/javascript" src="../jquery/jquery.js"></script> </head> <body> <p><span>Hello</span>, how are you?</p> <script>$("p").find("span").end().css("border", "2px red solid");</script> </body> </html>
查看结果: