Dynamically changing menus

slightlyeskew

Hey guys! I'm not sure the best way to do this...or even if its possible with php, but here's what I'm trying to do:

I have a form, with a <select> style menu. On that menu I have a list of stock certificates. Below that menu I have a text input area where the user is to put the number of shares they would like to remove from the certificate. I would like to set it up so that after the certificate is selected from the first menu, there is some sort of dynamic response where the total number of shares in the certificate (stored in my D😎 is displayed in the text input box. I have no idea how to do this!

As always, thanks for your time and comments!

bpat1434

AJAX....

Listen to the onchange event of the select. When it fires, then send a request off to your server with the value of the select box. Then send a response back with what you want to go in the textbox.

If you use a javascript library, it makes it slightly easier since you don't need to code an AJAX library.

djjjozsi

i have to make lots of select boxes, so i've made a generator for it.

If you fill the first two select name, it populates the second select based on the first value.
http://phpcode.hu/teszt/jquery_select/

slightlyeskew

So the consensus is to use javascript here?

bpat1434

It's a mix between javascript and php. Or you can use php to export a javascript object of the available options, and use pure javascript to read that object, and based on the select box, to update the options in it.

Alternatively, you could create all the dropdowns that you would need with the same name and disable each one. Then in javascript, only show and enable the one that should be enabled.