How to make nitification from website to desktop like Slack?

Question

JavaScript

For example, if someone writes to you, then on the desktop, if you have given the go-ahead to send notifications, a notification will pop up and play a sound that a message has arrived.
How to do this?

Answer 1

one , two , three , four , ...
everything is quite simple there. and in Russian dofiga information.

Answer 2

If you don’t want to bother from a technical point of view, use ready-made services like https://sendpulse.com/