I am confused, here is product.id, but on 13c and d has became productId,,,

product.id is used when we are creating the HTML for each product. It's available only in that part of the code.

productId is used inside the button click event because product.id isn't accessible there. productId comes from the button that was clicked, which tells you which product was selected.

Why the Change? because we use productId in the event listener to correctly identify and update the specific product when the "Add to Cart" button is clicked.

This ensures the right product is added to the cart when the button is clicked.

You were given correct direction to us sir!

why cant we use data attributes here ? and also can we use ${product.id} directly while adding the class name

yes @abhitejreddy you can use but then we need to add a event listener on select and then we need to change the value of the data attribute and then use the value in the other areas

Good day fellow developers I have a silly question that needs an answer. What files are we to copy into the folder: 13-javascript-amazon-projects folder. I really need an answer

the whole javascript-amazon-projects folder including the changes