作业帮二级联动下拉框代码[1]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/13 13:14:54 PHP
![二级联动下拉框代码[1]](/uploads/image/n/1000777-49-7.jpg?t=%E4%BA%8C%E7%BA%A7%E8%81%94%E5%8A%A8%E4%B8%8B%E6%8B%89%E6%A1%86%E4%BB%A3%E7%A0%81%5B1%5D)
二级联动下拉框代码[1]PHP
【BK网络学院 - PHP】
二级联动下拉框代码，感觉还不错，拿来和大家分享一下，看代码了：
var subcat2 = new Array();
$i=0;
$sql="select * from cat_small ";//查询所有小类
$result=MySQL_query($sql);
while($rs=mysql_fetch_array($result))
{
echo "subcat2[".$i++."] = new Array('".$rs["id"]."','".$rs["cat_bigId"]."','".$rs["cat_name"]."');\n";
}
?>
function changeselect1(locationid)
{
document.leave_word.s2.length = 0;
document.leave_word.s2.options[0] = new Option('请选择','');
//alert(subcat2[1].toString());
//alert(locationid.length.toString());
for (i=0; i{
if (subcat2[i][1] == locationid)
{
document.leave_word.s2.options[document.leave_word.s2.length] = new Option(subcat2[i][2], subcat2[i][0]);}
}
}
二级联动下拉框代码，感觉还不错，拿来和大家分享一下，看代码了：
var subcat2 = new Array();
$i=0;
$sql="select * from cat_small ";//查询所有小类
$result=MySQL_query($sql);
while($rs=mysql_fetch_array($result))
{
echo "subcat2[".$i++."] = new Array('".$rs["id"]."','".$rs["cat_bigId"]."','".$rs["cat_name"]."');\n";
}
?>
function changeselect1(locationid)
{
document.leave_word.s2.length = 0;
document.leave_word.s2.options[0] = new Option('请选择','');
//alert(subcat2[1].toString());
//alert(locationid.length.toString());
for (i=0; i
if (subcat2[i][1] == locationid)
{
document.leave_word.s2.options[document.leave_word.s2.length] = new Option(subcat2[i][2], subcat2[i][0]);}
}
}