あなたはこのようなものが欲しいでしょう:
2番目のリストの各リストアイテムの値は、最初のリストのアイテムと同じ値で始まる必要があります。これは、最初の値でフィルタリングできるようにするためです。
編集:
ドロップダウンのアイテム。
リスト1:
Car -Value = 001
Truck -Value = 002
Van -Value = 003
リスト2:
Car option 1 - Value = 001001
Car option 2 - Value = 001002
Car option 3 - Value = 001003
Truck option 1 - Value = 002001
Truck option 2 - Value = 002002
Truck option 3 - Value = 002003
Van option 1 - Value = 003001
Van option 2 - Value = 003002
Van option 3 - Value = 003003
Javascript:
<script>
//Array to hold original subTypes
var _SubTypes = new Array();
$(document).ready(
function()
{
//Store the sub types
StoreSubTypes();
//Set up company Type on Change
$("#comp_type").change(CompanyTypeOnChange);
}
);
//Function to Store Initial List of Sub Types
function StoreSubTypes()
{
$("#comp_subtype option").each(
function(index, option)
{
//Store the option
_SubTypes[index] = option;
}
);
}
//Function to Filter Company Sub Types and Hide various fields
function CompanyTypeOnChange()
{
//Filter the Sub TYpes
FilterSubTypes();
}
//Filters the company sub types drop down
function FilterSubTypes()
{
//Get the value of the selected Company Type
var compType = $("#comp_type").val();
//Remove all Sub Type Items
$("#comp_subtype option").remove();
//Add the related items back to the list
$.each(_SubTypes, function(index, value)
{
//Get the current option
var option = _SubTypes[index];
//Get the first 3 characters of the value - this is the same as the compType if related
var subTypeIdentifier = option.value.substring(0,3);
//Add the option to the list if its valid for the compType
if(subTypeIdentifier==compType)
{
$("#comp_subtype").append(option);
}
//Add the --None-- option
if (option.value=="")
{
$("#comp_subtype").append(option);
}
}
);
}
</script>