multiple combo boxes

lukeurtnowski

I have a form on a page with 3 combo boxes (year,make,model). What I'm trying to make happen is after a selection is made from the first combo box, the second combo box would be populated from the selection made and the first combo boxes value would change to the selected options value.

eoghain

Unless you want to have each combo box be it's own form and submit itself on change thus reloading the page, you will have to do this with JavaScript. It's a well solved JavaScript problem, unfortunately for you I hate JavaScript and don't work with it so you'll have to search it out on the net.

lukeurtnowski

OK, I'm using the this.form.submit() function on the combo boxes onchange event, so It looks like im submiting the form (using the get method so its viewable by $_GET[year] ). Do you know how to change the first combo boxxes value to remain on what is selected after a selection is made.

eoghain

<select name=combobox1>
   <option value=1>This is item 1</option>
   <option value=2>This is item 2</option>
   <option value=3 selected>This is item 3</option>
</select>

That is the HTML for a combo box with item #3 selected. It's very simple to choose the selected option. If you are generating your HTLM in code then you just need to use the posted value to set the correct option to being selected. And I'd suggest you place it as a hidden value on your form for the second combo box so that your code can have both be selected properly when your user is working on the 3rd combo box.

lukeurtnowski

OK, thanks. I was wondering, how would you have that value change from SELECT YEAR to the actual year that was selected when a selection was made.