Check When Value Is In Array Won't Work Correctly / Fix It?

Apr 27, 2010

I'm looking for some guidance on a part of some coding practice I'm stuck on!

I've created a shopping cart using javascript, the items save to the arrays etc and it all works fine. If the user adds the same product again to the cart the quantity is added onto the previous quantity that is already in the cart.

To check if the item is already in the cart I've ued the below code, but what it does is update the quantity for the first cart, and when it updates the quantity for the second item it updates the quantity but keeps adding the same product to the cart in seperate elements of the array as well (if that makes sense?

here are the two functions used [code]...

It may jsut be a simple mistake I've made but it's been bugging me a lot and I can't seem to fix it.

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