HTML5 Server-Sent Events

What is the Web workers
 
A server-sent event is when a web page automatically gets updates from a server.
This was also possible before, but the web page would have to ask if any updates were available. With server-sent events, the updates come automatically.
Examples: Facebook/Twitter updates, stock price updates, news feeds, sport results, etc.


 ΙΕ not Support.

var source=new EventSource("sample.php");
source.onmessage=function(event)
  {
  document.getElementById("result").innerHTML+=event.data + "
";
  };