<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style>
select {width: 100px; height: 30px;}
</style>
<script>
function fillcity(){
var province=document.getElementById("province").value;
switch (province){
case"四川":
var cities=["成都","内江","绵阳","南充"];
break;
case"云南":
var cities=["昆明","大理","丽江","楚雄"];
break;
case"湖南":
var cities=["长沙","宾州","岳你","安定"];
break;
case"江苏":
var cities=["苏州","南京","扬州","镇江"];
break;
}
for(var i=0;i<cities.length;i++){
var city=document.getElementById("city");
city.options[i]=new option (cities[i], (cities[i]);
}
}
</script>
</head>
<body>
<select id="province" onchange="fillcity()">
<option value="空值" selected="selected"> 请选择省份</option>
<option value="四川">四川</option>
<option value="云南">云南</option>
<option value="湖南">湖南</option>
<option value="江苏">江苏</option>
</select>
<select id="city"></select>
</body> </html>
0 个回复