I'm working on allowing my client to wave Taxes for customers who indicate they are 501.3c compliant. We have a radio button in the Checkout template and I'm hoping to loop through the products and re-add them to a non-taxable category (oh, and they also need to be shipping to a specific state). Then refresh the Item list in the right column of the checkout page.
My question is two fold. I know I can make json calls to empty the cart, and re-add products, but I'm searching for a function that will refresh the Item list. Is there one? I tried 'updateTaxes()' - didn't seem to work.
So, let me know if I'm on the right track or not. Hopefully I am.