Future of jQuery Real Time Data

Future of jQuery Real Time Data

Will jQuery every make something for real time data effecting.
Am not talking about Ajax request.
As Ajax does some short stuff but we have to add time interval to refresh page.
Which I think is making too many unnecessary requests to sever.
To which we want the data should effect only when the server side is effected in same time in all device.
I know there are alternatives but will jQuery bring this kind of change in future or not?