Question

I have code like this: (and on jsfiddle http://jsfiddle.net/k6zNm/3/)

(function(){
    Marker = function(opts){
        var marker = this;
        marker.Version = "2012.Jul.06";
        marker.HelloWorld = function(){
            return marker.Version;
        }
    }
})();

window.mymarker = new Marker();
$("div#message").text(mymarker.HelloWorld());

The code works fine. But I think the (function(){})(); is a closure. Why can I access the Marker in it. Isn’t it a pollution to global namespace?

Answer 1

You haven’t used var with Marker, so it is a global variable instead of being scoped to the function.