<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title> new document </title> <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" /> <link rel="stylesheet" type="text/css" href="" /> <style type="text/css"></style> <script type="text/javascript" src="jquery-3.0.0.js"></script> </head> <body> <input type="radio" name="radio" value="1" />1<br/> <input type="radio" name="radio" value="2" />2<br/> <input type="radio" name="radio" value="3" />3<br/> <input type="radio" name="radio" value="4" />4 <script type="text/javascript"> var a = $("input[name='radio']:checked").val(); alert("选中的radio的值是：" + a); </script> </body> </html>