<!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></title> <script src="../Scripts/jquery-1.4.1.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { $("#getValue").click(function () { alert($(":radio[name=gender]:checked").val()); }); $("#setValue").click(function () { $(":radio[name=gender]").val(["保密"]); //给radio设值（选中）时要添加中括号[] }); }); /*****选中多个*******/ $(function () { $("#checkBtn").click(function () { $(":checkbox").val(["羽毛球", "篮球"]); }); }); </script> </head> <body> <input type="radio" value="男" name="gender" />男<br /> <input type="radio" value="女" name="gender" />女<br /> <input type="radio" value="保密" name="gender" />保密<br /> <input type="button" value="取值" id="getValue" /> <input type="button" value="设置" id="setValue" /> <br /> <br /> <br /> <input type="checkbox" value="篮球" />篮球 <input type="checkbox" value="足球" />足球 <input type="checkbox" value="乒乓球" />乒乓球 <input type="checkbox" value="冰球" />冰球 <input type="checkbox" value="羽毛球" />羽毛球 <input type="checkbox" value="橄榄球" />橄榄球 <input type="button" id="checkBtn" value="选中多个" /> </body> </html>