Here you will learn about Server Sent Events which used when you need to be
displayed data immediately to the end user without refreshing the web page.
When you need to display real-time data (Latest update from server) on web page,
but without refreshing the page you need to use Server Sent Events. As, to get
the latest update from server we need to refresh the browser, but somewhere like
Facebook/Twitter updates, stock price updates, etc websites you also might be
need to display latest real-time data on the web page. Server-Sent Events are
supported in all major browsers, except Internet Explorer.
First thing you have to do is to create EventSource object and give it a URL to
listen which is must needed In order to listen to an event in the client-side.
EventSource is a reference to a server side source that dispatches the events
(the generic handler in this case).
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