CiviCRM Community Forums (archive)

I want to customize new event form. With the help of Custom data in admin I added new drop down box, but the problem is that i want to add condition on dropdown box value. For example if the selected value is 'A' then show a text box otherwise show something else........

So for that which file i need to edit. & i'm new in civicrm. I don't know how to use hooks.

Any help will be appreciable  


Thanks in advance

But I don't know in which file i need to write logic   ..... I mean where to put my javascript or php logic for applying condition on select option ?