Base lib for JS

Base.js

/// https: //gist.github.com/felipegtx/3974654

(function (window) {

    window.Base = (function () {

        var publicMembers = {

            CreatePropertyBag: function (owner, defaults) {
                /// <summary>
                ///     Creates a properties bag for keeping data across the current page state
                /// </summary>

                var owner = owner ? owner : this;
                var props = defaults ? defaults : {};
                return {
                    SetAndReturnOwner: function (name, value) {
                        this.Set(name, value);
                        return owner;
                    },
                    Set: function (name, value) {
                        props[name] = value;
                    },
                    Get: function (name) {
                        return props[name];
                    },
                    Format: function (data) {
                        return publicMembers.Format(data, props);
                    }
                };
            },

            Format: function (strInput, objData) {
                /// <summary>
                ///     Parses a given string based on a given data.
                ///     Eg.:
                ///         Given the following input: 
                ///             strInput = "Hello {World}", objData = {World:"Earth"}
                ///         The result would be the following string "Hello Earth"
                ///
                ///         Given the following input: 
                ///             strInput = "Hello {0}", objData = ["Goodbye"]
                ///         The result would be the following string "Hello Goodbye"
                /// </summary>

                objData = typeof objData === 'object' ? objData : Array.prototype.slice.call(arguments, 1);
                if (strInput === null) { return; }
                return strInput.replace(/\{\{|\}\}|\{(\w+(\.+|\w)*)\}/g, function (m, n) {
                    if (m == "{{") { return "{"; }
                    if (m == "}}") { return "}"; }

                    var value = (n.split(".").length > 1) ? GetValueFor(n, objData) : objData[n];
                    return ParseDate(value);
                });
            }
        };

        function GetValueFor(strField, objData) {
            /// <summary> 
            ///     Gathers value from a given object data 
            ///     Eg.: 
            ///         Given the following input: 
            ///             strField = "Data.Key.Value" / objData = { Data : { Key : { Value : "My mapped data" } } }
            ///         The result from this function is a string with the following value: "My mapped data"
            /// </summary>

            var dataArray = strField.split(".");
            var value = "";
            for (var item in objData) {
                if (item == dataArray[0]) {
                    if (dataArray.length > 1) {
                        return GetValueFor(strField.substr(strField.indexOf(".") + 1), objData[item]);
                    }
                    else {
                        return objData[item];
                    }
                }
            }
        }

        function ParseDate(strValue) {
            /// <summary>
            ///     Parses a given date value
            /// </summary>

            var finalValue = strValue;
            if (/\/Date\(\d+\)\//.test(strValue)) {
                finalValue = new Date(parseInt(/-?\d+/.exec(strValue)[0])).toString("dd/MM/yyyy");
            }
            return finalValue;
        }

        return publicMembers;

    })();
})(window);

Example0.js

/// Creates a new property bag
var a = (function Do(){

   var propertyBag = Base.CreatePropertyBag(this /*referência para o owner da instância*/, {name: "Derp"} /*default values*/);

   var publicMembers = {
      SetName:function(value){propertyBag.SetAndReturnOwner("name", value);},
      SetAge:function(value){propertyBag.SetAndReturnOwner("age", value);},
      PrintData:function(){propertyBag.Format("Name: {name} - Age: {age}");}
   };

   return publicMembers;
   
})()

a.SetName("test").SetAge(2).PrintData();

Example1.js

alert(Base.CreatePropertyBag().Set("name", "derp").Format("Hi {name}!"));