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How to add items in the dropdown list dynamically on radio button selection

Soni Agrawal
Greenhorn

Joined: May 26, 2008
Posts: 6
I have a query related to Java Script as i am very new to JavaScript.
My Problem is...
i have created a group of radio button,1.new car 2.old car
onclick event i want to fetch some data from database and display in the dropdown list box corresponding to new car and old car...as i have tested that data is fetched from database correctly but cudn't display in the drop down list box on the click event of radio buttons.
[ May 27, 2008: Message edited by: Soni Agrawal ]
Eric Pascarello
author
Rancher

Joined: Nov 08, 2001
Posts: 15376
    
    6
You either need to postback the page by submitting a form or you have to load the data with Ajax.

Eric
Soni Agrawal
Greenhorn

Joined: May 26, 2008
Posts: 6
i m not using any submit button for radio buttons,i m getting data from database thru query that is written in a separate java file..so for every radio button selection,i m creating an object of that java class and calling different different functions according to selection..

actually i m new to javaScript,may be there will be any syntex problem that i m facing..please try to solve my problem
Soni Agrawal
Greenhorn

Joined: May 26, 2008
Posts: 6
And the dropdown listbox will be on the same page itself.
Eric Pascarello
author
Rancher

Joined: Nov 08, 2001
Posts: 15376
    
    6
In order to get that query you have to postback the form. It can be done the classic way [requires the page to refresh and uses onclick with document.formName.submit();] or the Ajax way [does not cause the page to refresh] as I stated before.

Eric
Soni Agrawal
Greenhorn

Joined: May 26, 2008
Posts: 6
on submit() what function i have to call
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61002
    
  65

You can find a good starting tutorial on Ajax in this article.

As you can see, it's more than just any function that you need to call.


[Asking smart questions] [Bear's FrontMan] [About Bear] [Books by Bear]
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61002
    
  65

Please be sure to take the time to compose descriptive subjects for your posts; read this for more information.

This entire forum is devoted to solving JavaScript problems so "JavaScript problem" isn't a very effective title.

You can go back and change your post to add a more meaningful subject by clicking the .
 
jQuery in Action, 2nd edition
 
subject: How to add items in the dropdown list dynamically on radio button selection