how to press keyboard with Jquery/ Javascript [duplicate]

You can full screen the browser directly using below code

var docElement, request;

    docElement = document.documentElement;
    request = docElement.requestFullScreen || docElement.webkitRequestFullScreen || 
                  docElement.mozRequestFullScreen || docElement.msRequestFullScreen;

    if(typeof request!="undefined" && request){
        request.call(docElement);
    }