fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div").focusin(function(){ $(this).css("background-color","#FFFFCC"); }); $("div").focusout(function(){ $(this).css("background-color","#FFFFFF"); }); }); </script> </head> <body> <div style="border: 1px solid black;padding:10px;"> First name: <input type="text"><br> Last name: <input type="text"> </div> <p>点击输入框获取焦点，点击输入框外的部分失去焦点。</p> </body> </html>
运行结果