How to calculate delivery date in product page

Many eCommerce companies often want to show an estimated delivery date of a product. So, a customer can expect product by that date.

Most of the developers calculate delivery date using JS. And I was also one of them. We use JavaScript because it’s easy but at the same time it is risky.

Why JavaScript is risky.

As we all know JavaScript is a client-side scripting language and it uses time and date from the user's computer and mobile. But, the user's time and date may be different from the merchant store time and date.

Solution.

The best way is one should calculate time and date using merchant's store time.
Here is the code  for 3 days calculation from today’s date.