gistfile1.js

function Deferred() { console.log(this); return (this instanceof Deferred) ? this.init() : new Deferred() }

Deferred.prototype = {
    init: function() { console.log("init"); }
};

new Deferred();
Deferred();

//Object
//init
//Window code.101000lab.org
//Object
//init
//Object