<!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>JavaScript省市县选择</title> <script src="https://files.cnblogs.com/artwl/pccs.js" type="text/javascript"></script> <script type="text/javascript"> window.onload=function(){ var pccs=new province_city_county_select(); pccs.init(); }; </script> </head> <body> <h1>JavaScript省市县选择</h1> <select id="s_province"></select> <select id="s_city"></select> <select id="s_county"></select> </body> </html>
3个dropdownlist id="s_province"
id="s_city"
id="s_county
js下载：https://files.cnblogs.com/artwl/pccs.js
http://www.chinacxy.com/JsDetail.aspx?id=15
另一个比较美观的三级联动的例子：
http://xueduany.github.com/KitJs/KitJs/demo/LinkageSelect/demo.html