省份级联简单示例
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2022-06-08 10:01:02
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>New Web Project</title>
<script type="text/javascript">
var sf = new Array();
sf[0] = new Array("0","--请选择省份--");
var gd = new Array();
gd[0] = new Array("0","广东");
gd[1] = new Array("1","深圳");
var zj = new Array();
zj[0] = new Array("0","杭州");
zj[1] = new Array("1","宁波")
function showCity(pe){
for (var i=0; i<pe.length;i++){
document.f.city.options[i] = new Option(pe[i][1],pe[i][0]);
}
}
function choose(){
var tag = document.f.p.value;
switch(tag){
case '0':init();showCity(sf);break;
case '1':init();showCity(gd);break;
case '2':init();showCity(zj);break;
}
}
function init(){
var len = document.f.city.options.length;
for (var i = 0; i<len; i++){
document.f.city.remove(i);
}
}
function flush(){
document.f.p.options[0].selected = true;
}
</script>
</head>
<body onload="flush()">
<h1>省市级联</h1>
<form name="f">
<select name="p" onchange="choose()">
<option value="0" selected>--省份</option>
<option value="1">广东</option>
<option value="2">浙江</option>
</select>
<select name="city">
<option value="0">城市</option>
</select>
</form>
</body>
</html>
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