[object Object]

HTML

<span id="test"/>

JavaScript

function out(s) {
	$("#test").append(s+"<br/>");
}
jQuery(document).keydown(function(e) {
var key = e.which || e.keyCode; // keyCode detection
				var ctrl = e.ctrlKey ? e.ctrlKey : ((key === 17) ? true : false); // ctrl detection
                if (key == 13 && ctrl) {
                    out("ctrlenter");
                } else if (key == 32 && ctrl) {
                    out("ctrlspace");
                } else if (key == 13) {
                    out("enter");
                } else if (key == 38) {
                    out("up");
                } else if (key == 40) {
                   out( "down");    
                } else {
                	out("e.ctrlKey: " + e.ctrlKey + " key:" + key);
                }
			    }
);