i used IntersectionObserver to handel infante scroll where the element how are not in view will be removed and replaced by placeholder div
this cart page where you can remove items or increases/decreases quantity or process payment by click checkout button
after that you will by redirect to stripe page to fill payment details after that stripe will send web hook to the server to verify payment
this is shop page where i used IntersectionObserver to handel infante scroll vertical with categories rows and horizontal with products. the element how are not in view will be removed and replaced by placeholder div
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