Broken code.

gistfile1.js

FMWK = { 'hulk' : 'smash' }
FMWK.button = function() {
  var _this = this;
  console.log(this.hasOwnProperty('hulk') ? "HULK SMASH" : "");
  this.el = document.createElement('button');
  ['hide','show'].forEach(function(method){
    FMWK.button.prototype[method] = function(){
      $(_this.el)[method].apply($(_this.el), Array.prototype.slice.call(arguments));
     }
  });

  return this;
}

var b1 = new FMWK.button();
var b2 = new FMWK.button();

b1.hide() // fires on b2