<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript">
var cityList = new Array();
var quList = new Array();
cityList[‘北京‘] = [‘北京‘];
cityList[‘浙江‘] = [‘杭州市‘, ‘温州市‘, ‘金华市‘, ‘临安市‘];
cityList[‘陕西‘] = [‘西安‘, ‘宝鸡‘, ‘咸阳‘];
cityList[‘甘肃‘] = [‘兰州市‘, ‘武威市‘, ‘酒泉市‘, ‘张掖市‘];
quList[‘北京‘] = [‘1区‘, ‘2区‘, ‘3区‘, ‘4区‘];
quList[‘杭州市‘] = [‘5区‘, ‘6区‘, ‘7区‘, ‘8区‘];
quList[‘温州市‘] = [‘9区‘, ‘10区‘, ‘11区‘, ‘12区‘];
quList[‘西安‘] = [‘13区‘, ‘14区‘, ‘15区‘, ‘16区‘];
quList[‘宝鸡‘] = [‘17区‘, ‘18区‘, ‘19区‘, ‘20区‘];
quList[‘兰州市‘] = [‘21区‘, ‘22区‘, ‘23区‘, ‘24区‘];
window.onload = allData;
function allData() {
var shengfen = document.getElementById(‘shengfen‘);
for(var sf in cityList) {
shengfen.add(new Option(sf, sf));
}
}
function changeCity() {
var chengshi = document.getElementById(‘chengshi‘);
var sheng = document.getElementById(‘shengfen‘).value;
chengshi.options.length = 1;
for(var cs in cityList[sheng]) {
chengshi.add(new Option(cityList[sheng][cs], cityList[sheng][cs]));
}
}
function changequ() {
var shiqu = document.getElementById(‘shiqu‘);
var cheng = document.getElementById(‘chengshi‘).value;
shiqu.options.length = 1;
for(var sh in quList[cheng]) {
shiqu.add(new Option(quList[cheng][sh], quList[cheng][sh]));
}
}
</script>
</head>
<body>
<br />
<select id="shengfen" style="width:100px" onchange="changeCity()">
<option>--选择省份--</option>
</select>
<select id="chengshi" style="width:100px" onchange="changequ()">
<option>--选择城市--</option>
</select>
<select id="shiqu" style="width:100px">
<option>--选择区县--</option>
</select>
</body>
</html>
原文：http://www.cnblogs.com/libin-1/p/5894670.html