下拉框连动的小例子（.htm版）
2016-01-29 17:18
下拉框连动的小例子（.htm版）,下拉框连动的小例子（.htm版）
<head
<titleList</title
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"
<script LANGUAGE="javascript"
<!--
var onecount;
onecount=0;
subcat = new Array();
subcat[0] = new Array("徐汇区","01","001");
subcat[1] = new Array("嘉定区","01","002");
subcat[2] = new Array("黄浦区","01","003");
subcat[3] = new Array("南昌市","02","004");
subcat[4] = new Array("九江市","02","005");
subcat[5] = new Array("上饶市","02","006");
onecount=6;
function changelocation(locationid)
{
document.myform.smalllocation.length = 0;
var locationid=locationid;
var i;
document.myform.smalllocation.options[0] = new Option('====所有地区====','');
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.smalllocation.options[document.myform.smalllocation.length] = new Option(subcat[i][0], subcat[i][2]);
}
}
}
//--
</script
</head
<body
<form name="myform" method="post"
<select name="biglocation" onChange="changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value)"
<option value="01" selected上海</option
<option value="02"江西</option
</select
<select name="smalllocation"
<option selected value=""==所有地区==</option
</select
</form
<script LANGUAGE="javascript"
<!--
changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value);
//--
</script
</body
</html
