Simple javascript HashMap

function each(object, callback) {if (undefined === object.length) {for ( var name in object) {if (false === callback(object[name], name, object))break;}} else {for ( var i = 0, len = object.length; i < len; i++) {if (i in object) {if (false === callback(object[i], i, object))break;}}}}var Map = function() {this.keySet = new Array();this.values = new Array();}Map.prototype.put = function(mKey, mValues) {this.keySet.push(mKey);this.values.push(mValues);}Map.prototype.updateKeyValue = function(mKey, mValues) {if (this.keySet == null) {return null;}var hasKey = false, mIndex = -1;each(this.keySet, function(o, index) {if (mKey == o) {mIndex = index;hasKey = true;return false;}})if (hasKey == false) {this.keySet.push(mKey);this.values.push(mValues);} else {if (mIndex != -1) {this.values[mIndex] = mValues;}}}Map.prototype.get = function(mKey) {if (this.keySet == null) {return null;}for ( var i = 0; i < this.keySet.length; i++) {if (mKey == this.keySet[i]) {return this.values[i];}}}