[Home](./index.md) > [@empathyco/x-components](./x-components.md) > [DefaultExternalTaggingService](./x-components.defaultexternaltaggingservice.md) > [trackAddToCart](./x-components.defaultexternaltaggingservice.trackaddtocart.md) ## DefaultExternalTaggingService.trackAddToCart() method Checks if the session storage contains a result information for a given id or the current url. If exists, it tracks the add to cart and saves the add to cart information into session storage. **Signature:** ```typescript trackAddToCart(id?: string): void; ``` ## Parameters

Parameter	Type	Description
id	string	_(Optional)_ The id of the result to track.

**Returns:** void