RUNOOB.COM
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>电脑学习网教程(runoob.com)</title> <script src="https://cdn.staticfile.org/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("input").focus(function(){ $(this).css("background-color","#cccccc"); }); $("input").blur(function(){ $(this).css("background-color","#ffffff"); }); }); </script> </head> <body> Name: <input type="text" name="fullname"><br> Email: <input type="text" name="email"> </body> </html>
运行结果