you find the exact code at http://groups.yahoo.com/group/phpexperts/message/3277
On 1/6/06, Jeromie Clark <[EMAIL PROTECTED]> wrote: > > Hi Bhavin - > > You'll find a lot of information on google if you search for > "Interdependent Dropdown" or "Interdependent Select" > > There are a couple approaches to this: > > 1.) Oldschool Javascript Approach > > In this one, you use PHP to generate some Javascript to be included > in your output page. > You'll populate some javascript arrays with ALL of the various > options to be included in your dropdown. > > Pros: Everyone and their mom has built one of these, and there are a > ton of good examples and tutorials > Cons: Not very friendly in terms of accessibility, heavy page > downloads > > 2.) Hybrid Javascript/CSS Approach > > I found this approach on the Unobtrusive Javascript website and have > been using it successfully in recent projects. > They use a combination of "class" parameters (ie. <option > class='parent_category'> ) and javascript. > > Pros: The markup is cleaner -- you're generating HTML instead of > Javascript with your PHP, degrades more gracefully > Cons: Heavy page download > > 3.) AJAX Approach > > Based on the value selected in the first dropdown, you would > dynamically update the page via the Javascript DOM. > You'd probably benefit from the use of an AJAX framework like > Taconite > (http://taconite.sourceforge.net/)<http://taconite.sourceforge.net/%29> > > Pros: Lightweight initial transfer if you've got a huge amount of > options in your dropdowns. > Cons: AJAX is HARD. :) > > I've posted more details about this particular issue a few times on this > forum. > Search the forum archives (or google) for more information on the option > that sounds most appropriate for your project. > > -Jeromie > > > >Hello All PHP Experts, > > This is Bhavin Shah, inneed of help from your end, I > >am designing a form, in which i am having two Drop > >down box, Value of Second Drop Down is dependent on > >first. For Example, if we sign in any mail A/C, we > >find Country and State. The Value of State is > >dependent on the Value of Country. If any One can > >provide me with the small help. > >the Database > >Table[Country] : CountryId, CountryName; > >Table[State] : stateid, countryId, StateName; > > > > > > > >Thanks in Advance; > >Regards > >Bhavin > > > > New Document > > > >Send instant messages to your online friends > http://in.messenger.yahoo.com > > > > > > > > > > > >The php_mysql group is dedicated to learn more about the PHP/MySQL web > database possibilities through group learning. > >Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > The php_mysql group is dedicated to learn more about the PHP/MySQL web > database possibilities through group learning. > > > ------------------------------ > YAHOO! GROUPS LINKS > > > - Visit your group "php_mysql<http://groups.yahoo.com/group/php_mysql>" > on the web. > > - To unsubscribe from this group, send an email to: > [EMAIL PROTECTED]<[EMAIL PROTECTED]> > > - Your use of Yahoo! Groups is subject to the Yahoo! Terms of > Service <http://docs.yahoo.com/info/terms/>. > > > ------------------------------ > -- ----------- Regards, Ramesh [Non-text portions of this message have been removed] The php_mysql group is dedicated to learn more about the PHP/MySQL web database possibilities through group learning. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/php_mysql/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
