求助关于二级连动菜单问题

jinshuk

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注册时间: 2006-11-12
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1^# jinshuk 发表于2007-04-25

求助关于二级连动菜单问题

二级连动菜单小类不能取到值大家帮忙看看代码哪里有错误急死我了弄了一天了

<html>
<head>
<script language = "JavaScript">
var onecount;
onecount=0;
subcat = new Array();
<?php
require('../conn.php');
$sql = "select * from smallclass";
$result = mysql_query( $sql );
$count = 0;
while($res = mysql_fetch_row($result)){
?>
subcat[<?=$count?>] = new Array("<?=$res[0]?>","<?=$res[1]?>","<?=$res[2]?>");
<?
$count++;
}
echo "onecount=$count;";
?>
//联动函数
function changelocation(locationid)
{
document.myform.ctype.length = 0;
var locationid=locationid;
var i;
for (i=0;i < onecount; i++)
      {
         if (subcat[2] == locationid)
         {
   //var newOption1=new Option(subcat[1], subcat[0]);
            // document.all.ctype.add(newOption1);
            document.myform.ctype.options[document.myform.ctype.length] = new Option(subcat

[1], subcat[0]);
         }
      }

}
</script>
</head>
<body>
<form method="post" name="myform" action="">
<table border="1" cellpadding="0" cellpscing="0" width="400" aling="center">
<tr>
<td>标题</td>
<td><input type="text" name="titile" ></td>
</tr>
<tr>
<td>分类</td>
<td>
<select name="type" onChange="changelocation(document.myform.type.options

[document.myform.type.selectedIndex].value)" size="1">
<option selected value="">请指定主分类</option>

<?
$sql = "select * from bigclass";
$result = mysql_query( $sql );
while($res = mysql_fetch_row($result)){
?>
<option value="<? echo $res[0]; ?>"><? echo $res[1]; ?></option>
  <? } ?>

   </select>

<select name="ctype" >
      <option selected value="">请指定小分类</option>

</select>
</td>
</tr>
<tr>
<td> </td>
<td><input type="submit" value="确定"></td>
</tr>
</table>
</form>
</body>
</html>