How to display the quantity of an item in an OpenCart cart?

Question

opencart

Can you please tell me how to display the quantity of goods in the OpenCart cart? In the header, it is displayed normally, but if you scroll down the page, then when you add a product to the cart, the number does not change.

Answer 1

Write to cookies and output. Watch the "add to cart" event and attach an additional function to it. Although the mind should work initially.