One listener for ALL events in jQuery event namespace?

Question

I know I have the ability to namespace events using jQuery\'s, $.fn.on, off and trigger functions. Is it possible to set up a handler that is able to listen to ALL events in

Answer 1

Edit, Updated

Try

    var ns = ".event_namespace", log = [];

    // place below block at bottom of script block , 
    // after `n` events attached to `n` window, document, elements 

    // listen for events having `ns` namespace ,
    // attached to `window, document, "*"` , above
    $(window, document, "*").on("event", function(e, ns, type) {
        // do stuff when event having `ns` occurs 
        log.push([ns, type]);
        $("#log").html("type, namespace: " + log.slice(-1)
                       + "
 total " + ns + " events: " 
                       + log.length)
    });

    // if dynamic elements , events later attached ,
    // re-run this piece to add `event` event to those elements
    $.each([window, document, $("*")], function(k, v) {
        if($._data(v, "events") !== undefined) {
            $.each($._data(v, "events"), function(key, val) {
                if (val[0].namespace === ns.slice(- (ns.length -1))) {
                    $(v).on(key + ns, function(e) {
                         $(e.target).trigger("event", [e.namespace, e.type])
                    })
                }
            })
        }
    });

jsfiddle http://jsfiddle.net/guest271314/s87j4o6r/4/