Function: Removes a discount code from the cart via ajax

Function: Checks whether AJAX is enabled.

Function: Checks whether AJAX is disabled.

Function: Check if AJAX works as expected

Function: Get AJAX URL

Function: Removes item from cart via AJAX.

Function: Adds item to the cart via AJAX.

Function: Gets the cart’s subtotal via AJAX.

Function: Validates the supplied discount sent via AJAX.

Function: Validates the supplied discount sent via AJAX.