I would like to create a realtime chat phonegap app using nodejs for realtime. But I am not even sure whether it is possible or not.I am a newbie to nodejs. I really appreciate any answers.
There is a lot of solution to create a real time chat in node js.
I will advice following one of those tutorial that were really useful to me.
http://tutorialzine.com/2014/03/nodejs-private-webchat/
http://socket.io/get-started/chat/
Make it work locally on your web browser and it will need only little UI modification to make it work on devices.
Hope this help.