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01.20.2007 at 10:43PM PST, ID: 22130440
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9.8

Populate one dropdown based on the selection made in another ? (Combo JS / CF)

Asked by MichaelEvangelista in ColdFusion Application Server

Tags: , , , ,

Not sure if this is best asked in the JS department... but here goes...

I have a form with a dropdown for category, and another for subcategory
All subcategories have a related 'categoryID' in the database - but I am not sure how to use that in my form.

Currently, I have each dropdown populated from its own query, and all of the available subcategories are shown in the dropdown, regardless of category selected, which allows for some errors on the user's part.

What I want to do is limit the available subcategories so that, when a category is chosen, the contents of the subcategory dropdown change to only show subcats related to the chosen category.

i.e.
-----------------------------------------------------------
what I have now
---------
Cats = fruit vegetables candy
SubCats = apples oranges celery carrots mints jawbreakers

what I want
----------
Cats = fruit vegetables candy
(if user chooses fruit) SubCats = apples oranges
(if user chooses vegetables) SubCats = celery carrots
(if user chooses candy) SubCats = mints jawbreakers
------------------------------------------------------------

Does this make sense?
I know I have seen this function several places... the main thing is I need to do this without refreshing the page.

If this doesnt seem like a CF question I will post in JS.

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[+][-]01.21.2007 at 10:15PM PST, ID: 18363175

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About this solution

Zone: ColdFusion Application Server
Tags: another, populate, based, dropdown, one
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Solution Provided By: pinaldave
Participating Experts: 2
Solution Grade: A
 
 
[+][-]02.05.2007 at 06:10AM PST, ID: 18467779

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