HTML5 Web Sockets are awesome! I've been toying around with it for a bit today and noticed that not every browser supports native HTML5 Web Sockets yet.

Google Chrome 5 has native support for web sockets, FireFox 3.6 does not. This poses a problem if you're building something awesome that does require web sockets.

Luckily, it's easy to detect web sockets support through JavaScript. All you really need to do is check if WebSocket is defined or not.

Here's a simple example, note that I'm using jQuery here.

$(document).ready(function() {
  if( typeof(WebSocket) != "function" ) {
    $('body').html("<h1>Error</h1><p>Your browser does not support HTML5 Web Sockets. Try Google Chrome instead.</p>");
  }
});

Maybe there are better ways, but it works for me.