<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<script type="text/javascript">
var shengArr = new Array();
shengArr["广东"] = ["广州", "深圳", "珠海", "汕头", "韶关"];
shengArr["湖南"] = ["长沙", "张家界", "株洲", "怀化", "常德"];
shengArr["湖北"] = ["武汉", "荆州", "宜昌", "黄冈", "仙桃"];
shengArr["安徽"] = ["合肥", "黄山"];
shengArr["河南"] = ["郑州", "信阳", "洛阳"];
function getSheng() {
var s = document.getElementById("sheng");
for (var v in shengArr) {
s.add(new Option(v, v), null);
}
}
function getCity() {
var s = document.getElementById("sheng");
var c = document.getElementById("city");
var v = s.value;
c.options.length = 0;
for (var i in shengArr[v]) {
c.add(new Option(shengArr[v][i], shengArr[v][i]), null);
}
}
</script>
<!--页面加载时获取 省名-->
<body onload="getSheng()">
<!-- 改变省时匹配该省的城市名-->
省：
<select id="sheng" onchange="getCity()">
<option>--请选择</option>
</select>
市：
<select id="city"></select>
</body>
</html>下拉列表级联的小demo
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转载自blog.csdn.net/qq_36072384/article/details/81290451
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