<html>
<head>
<title>New Document </title>
<script language="JavaScript" type="text/javascript">
var city=[
["北京","天津","上海","重庆"],
["南京","苏州","南通","常州"],
["福州","福安","龙岩","南平"],
["广州","潮阳","潮州","澄海"],
["兰州","白银","定西","敦煌"]
]
function getCity(){
var sltProvince=document.getElementById("province")
var sltCity=document.getElementById("city")
var provinceCity=city[sltProvince.selectedIndex-1]
sltCity.length=1
for(var i=0i<provinceCity.lengthi++){
sltCity[i+1]=new Option(provinceCity[i],provinceCity[i])
}
}
</script>
</head>
<body>
<form action="somepage.asp" name=theForm">
<select name="province" id="province" onchange="getCity()">
<option value="0">请选择所在省份</option>
<option value="直辖市">直辖市</option>
<option value="江苏省">江苏省</option>
<option value="福建省">福建省</option>
<option value="广东省">广东省</option>
<option value="甘肃省">甘肃省</option>
</select>
<select id="city" name="city">
<option value="0">请选择所在城市</option>
</select>
</form>
</body>
</html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML>
<HEAD>
<TITLE>New Document </TITLE>
<script>
var city=[["北京","天津","上海","重庆"] ]
function getCity(){
var sltProvince=document.getElementById("province")
var sltCity=document.getElementById("city")
var provinceCity=city[sltProvince.selectedIndex-1]
sltCity.length=1
for(var i=0i<provinceCity.lengthi++){
sltCity[i+1]=new Option(provinceCity[i],provinceCity[i])
}
}
//这里就是取当前被选中的下拉框的值。
function showInfo(){
var sltProvince=document.getElementById("province")
var sltCity=document.getElementById("city")
for(var i=0i<sltCity.lengthi++){
if(sltCity.options[i].selected)
document.getElementById("cityValue").innerHTML=sltCity.options[i].value
}
for(var i=0i<sltProvince.lengthi++){
if(sltProvince.options[i].selected)
document.getElementById("pro").innerHTML=sltProvince.options[i].value
}
}
</script>
</head>
<BODY>
<form action="somepage.asp" name=theForm">
<select name="province" id="province" onchange="getCity()">
<option value="0" selected>请选择所在省份</option>
<option value="直辖市">直辖市</option>
</select>
<select id="city" name="city">
<option value="0">请选择所在城市</option>
</select>
<input type="button" onclick="showInfo()"/>
</form>
<div id="showvalue">
省份：<span id="pro"> </span> 城市 ： <span id="cityValue"> </span>
</div>
</BODY>
</HTML>
自己写的。测试了。看看是不是你想要的结果。
