JavaScript   16. Building a Cash Register

Archive of QA for this lesson (2)
How to fix the 1% bug (9)
Building a cash Register.! (6)
Bleep Bleep (4)
You Deserved It! (5)
You Deserve It! (Help!) (3)
7/7 You deserved it. failed to define applyStaffDiscount (4)
7/7 Javascript building a cash register (4)
Bleep bleep (5)
7. You Deserved It! (5)
Bleep Bleep (7)
3. Short-term Memory (debug) (11)
Build a Register: Bleep Bleep (Needs Debug) (12)
You Deserved It! (11)
Don't know where I get wrong with my register (3)
Why scan function not working building a cash register (3)
(3/4) I have to scan it more than once? - Right output, but failing test (4)
This code doesn't work, and I really need help (10)
Building a Cash Register pt4 (Needs Debug) (8)
My head is spinning. Help with BLEEP BLEEP (3)
Building a Cash Register (Needs Debug) (6)
Your bill is NaN, but why? (6)
7. You Deserved It! (7)
Short-Term Memory - Help? :) (6)
Why wont this work (3)
Short-term memory - Getting this error "ReferenceError: total is not defined" (5)
Why does the lastTransactionAmount have to be set to 0? (3)
I Have to Scan It More Than Once? help! (4)
I have a doubt (2)
You Deserved It! (5)