On Jan 17, 2007, at 1:39 PM, Brad Fuller wrote:
-----Original Message-----
From: Jay Blanchard [mailto:jblanchard@xxxxxxxxxx]
Sent: Wednesday, January 17, 2007 4:05 PM
To: Don; php-general@xxxxxxxxxxxxx
Subject: RE: dynamic lists
[snip]
By dynamic drop list I mean the type where the options
contained in the subsequent list depend on what was picked in
the previous list without clicking submit.
[/snip]
PHP is server side, you need to do this with AJAX or Javascript
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Don,
There's a few different ways to do this.
#1) Submit the form (to itself) when a user chooses an option from
the first
list (using onChange=form.submit()) then with PHP query the
database for the
second set of options.
#2) Use JavaScript to store all the values and pop them in when the
user
chooses an option from the first list (using onChange=someFunction
(...)).
I like #2. If you need a starting point, google for "javascript
dynamic
select list"
Hope that helps,
Brad
FYI... Neither #1 or #2 are considered good practice for
Accessibility/ADA compliance. If you are using a keyboard or screen
reader to view your website, it will always pick the first one in the
list and you won't have the option of even seeing the rest of the
list. Basically, anything that uses onchange or onselect will cause
accessibility issues. The only way to accomplish this is using
onclick or submitting the form.
--
Kevin Murphy
Webmaster: Information and Marketing Services
Western Nevada Community College
www.wncc.edu
775-445-3326
