How to prevent entering comma into field?

[hominid4]

The form on the below page has several AJAX calculation elements and there is a "Quantity". All works as we need except if a comma is entered in the "Quantity" it doesn't take into account any numbers after the comma. Such as 5 and 5,000 returns the same Total.

http://www.lithoninja.com/requests/comic-print/form/1.html

How would it be possible to disallow entering a comma, or any other character besides a number for that matter, so that 5,000 becomes 5000 during the AJAX calculations?

That element is a field element:
Eval: Yes
Default: return 1;
Auto Complete: Yes
Format: Integer
Number Format: No

Thanks!

 

[hominid4]

I was able to remove the comma in the calculations but not sure if I'm heading in the right direction?

In each of my calculation elements I had the below variable which I then use throughout the calculation:

$quantity = '{f_p_comic___quantity_raw}';

I've changed that to:

$quantity = str_replace(',', '', '{f_p_comic___quantity_raw}');

I have 6 different calc elements in this form and each have the variable above. To fix my "comma" problem, is it correct that I should update my code in each calc element, instead of modifying the one Quantity field element?

Thanks!

 

[troester]

Add a "isnumeric" validation to your quantitiy element.