troubleshooting Question

NaN Error in Subtotal Field

Avatar of parajrn
parajrn asked on
Web DevelopmentJavaScript
14 Comments1 Solution648 ViewsLast Modified:
Hi everyone,

I'm writing because I've been working to code a fairly simple order form and while I've pretty much gotten everything down, I'm having an issue with getting NaN errors if the discount field on the form does not contain a value.

For example, the form starts out with 0 in the field, and if a user changes the value, the amount is deducted from the total, however if a user erases the 0 or value and leaves the field blank, the subtotal column will display an NaN error.

I've tried sorting through the code and putting in code to treat the discount field as 0 if it is NaN however no matter what I try I haven't been able to solve the issue.

I've attached the code, however it is fairly lengthy mainly due to the fact that the item listings are repeated ten times. The main code to focus on is really at the top near the head (in the script field) and probably the lines after the last item listing where you see Sales Tax and such.

Also, the current version of the form is at:  http://intensivejournal.org/info/buyItems.php

Thanks very much in advance for any assistance.
buyItems.php
ASKER CERTIFIED SOLUTION
Join our community to see this answer!
Unlock 1 Answer and 14 Comments.
Start Free Trial
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 14 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros