省地市三级联动下拉菜单(JS版)

黄振国

DEMO.html

<script language="javascript" src="PCASClass.js"></script>
出生地：<select name="province"></select><select name="city"></select><select name="area"></select><br>
<script language="javascript" defer>
new PCAS("province","city","area","吉林省","白城市","大安市");
</script>