jQuery 二级联动
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>jQuery 二级联动</title>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.5.1.min.js"></script>
<script type="text/javascript">
var currentShowCity=0;
$(document).ready(function(){
$("#province").change(function(){
$("#province option").each(function(i,o){
if($(this).attr("selected"))
{
$(".city").hide();
$(".city").eq(i).show();
currentShowCity=i;
}
});
});
$("#province").change();
});
function getSelectValue(){
alert("1级="+$("#province").val());
$(".city").each(function(i,o){
if(i == currentShowCity){
alert("2级="+$(".city").eq(i).val());
}
});
}
</script>
</head>
<body>
<select id="province">
<option>----请选择省份----</option>
<option>北京</option>
<option>上海</option>
<option>江苏</option>
</select>
<select class="city">
<option>----请选择城市----</option>
</select>
<select class="city">
<option>东城</option>
<option>西城</option>
<option>崇文</option>
<option>宣武</option>
<option>朝阳</option>
</select>
<select class="city">
<option>黄浦</option>
<option>卢湾</option>
<option>徐汇</option>
<option>长宁</option>
<option>静安</option>
</select>
<select class="city">
<option>南京</option>
<option>镇江</option>
<option>苏州</option>
<option>南通</option>
<option>扬州</option>
</select>
<INPUT TYPE="button" VALUE="点我" ONCLICK="getSelectValue();">
</body>
</html>
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