Caniuse News

Chrome 6 to support Server Push Events (EventSource)

Back in 2006(!) Opera 9.0 supported a new pre-HTML5 (then Web Apps 1.0) element named event-source that allowed the server to continuously send data to the browser. Since then, the specification rolled into HTML5 and changed heavily. The feature now is a JavaScript object knows as EventSource, and will be supported by Chrome 6. Note that Opera's current implementation is still based on the original spec, though can probably be emulated to match Chrome's support by use of clever hacking.