这个周末还过不好吗？阿信的无限关联菜单，用于修改。急急急急急急

错误的提示是什么？
查看你生成的JS数据，value是什么，是否真的是"网络",加trim试试，我这试过都是好的

解决方案 »

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不知是不是你要的
<html>
<head>
<title></title>
</head>
<SCRIPT language="javascript" >
var optionNum = "";
var hospitalList = new Array("","水果","肉类");
var roomList = new Array( );
roomList[0] = new Array("请选择类别");
roomList[1] = new Array("苹果","梨","香蕉");
roomList[2] = new Array("猪肉","牛肉","鸡肉＝＝你敢吃么？？");
function initSelect1()
{
while ( document.all.hospital.options.length > 0)
hospital.options.remove(0);
for (var i = 0; i < hospitalList.length; i++)
{
var opt = document.createElement("OPTION");
opt.value = hospitalList[i];
opt.text = hospitalList[i];
document.all.hospital.options.add(opt);
opt = null;
}
initSelect2();
document.all.hospital.onchange = initSelect2;
}function initSelect2()
{
while (document.all.room.options.length > 0)
document.all.room.options.remove(0);
var myArr = roomList[document.all.hospital.selectedIndex];
for (var i = 0; i < myArr.length; i++)
{
var opt = document.createElement("OPTION");
opt.text = myArr[i];
opt.value = myArr[i];
document.all.room.options.add(opt);
opt = null;
}
    var optionNum = document.all.hospital.selectedIndex;
}
function window.onload()
{
initSelect1(document.all.hospital);
}
function IndexDemo(str2){
   var str1 = "BABEBIBOB.UBABEBIBOBU"
   var s = str1.indexOf(str2);
   alert(s);
}</SCRIPT>
<body>
<p>
  <select name= "hospital" id = "hospital" style="width:100px">
  </select>
  <Select id = "room" style="width:200">
  </Select>
  连动select菜单：
</p>
<p> </p>
<form name="form1" method="post" action="">
  <p> </p>
  <p>
    <input type="submit" name="Submit" value="连动select菜单" onClick="IndexDemo(this)">
  </p>
</form>
<p> </p>
</body>
</html>