<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>selct_val</title> <meta name="author" content="Administrator" /> <script type="text/javascript" src="script/jquery-1.12.2.js"></script> <!-- Date: 2016-03-23 --> </head> <body> <select id="single"> <option>选择一号</option> <option>选择二号</option> <option>选择三号</option> </select> <select id="multiple" multiple="multiple" style="height:120px"> <option selected="selected">选择一号</option> <option>选择二号</option> <option>选择三号</option> <option>选择四号</option> <option selected="selected">选择五号</option> </select> <input type="checkbox" value="check1" />多选1 <input type="checkbox" value="check2" />多选2 <input type="checkbox" value="check3" />多选3 <input type="checkbox" value="check4" />多选4 <input type="radio" value="radio1" name="a" />单选1 <input type="radio" value="radio2" name="a" />单选2 <input type="radio" value="radio3" name="a" />单选3 </body> <script type="text/javascript"> $("#single").val("选择二号"); $("#multiple").val(["选择二号","选择三号"]); $(":checkbox").val(["check1","check3"]); $(":radio").val(["radio2"]); </script> </html>