Auto Calculate Total when textfield Value is inserted
I'm trying to find a script that can do a calculation of two values and add them to get a total. An example for this would be the following:
Item 1, Qty: 2, Value: 150
I want it to multiply the qty by the value.
This is, more specifically, for an Invoice/Purchase Order form that is processed in a PHP page.
I would greatly appreciate all of your support.