Calculates additional fees to include in the cart and checkout pages.
The calculateAdditionalFees function calculates additional fees to appear in the cart and checkout pages of a store's site.
The function is automatically called by Wix when the cart totals are calculated, or when an action is performed in
the cart and/or checkout pages. For example, when an item is added to the cart, or when a shipping location is specified.
calculateAdditionalFees()When you add the Additional Fees service plugin,
a folder is automatically added to your site. Use the .js file in the folder to write the code to calculate any additional fees to add to the cart or checkout.
For more information on calculating your additional fees, see Velo Tutorial: eCommerce Additional Fees Service Plugin.
Options for line items and shipping options.
Metadata about the request.
This method doesn’t return any custom errors, but may return standard errors. Learn more about standard Wix errors.