While this worked okay, it wasn?t very smooth. It was frustrating, for example, to change shopping cart quantities for five items and remove a few others. Each change would take a few seconds to load. Shoppers would often become annoyed and leave.
This opened up many interactions that are now common:
Now, because of AJAX, modern ecommerce applications are full of these dynamic, backend-supported interactions. Source: CoolInterview.com
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