A number of references on the javascript Class Framework/Class Implementation

gistfile1.txt

Function Grouping operator

(function b() {
    console.log("Second grouping operatotr");
})

(function a() {
    console.log("First grouping operatotr");
}());

Javascript Inheritence

/* Simple JavaScript Inheritance
 * By John Resig http://ejohn.org/
 * MIT Licensed.
 */
// Inspired by base2 and Prototype
(function(){
  var initializing = false, fnTest = /xyz/.test(function(){xyz;}) ? /\b_super\b/ : /.*/;
 
  // The base Class implementation (does nothing)
  this.Class = function(){};
 
  // Create a new Class that inherits from this class
  Class.extend = function(prop) {
    var _super = this.prototype;
   
    // Instantiate a base class (but only create the instance,
    // don't run the init constructor)
    initializing = true;
    var prototype = new this();
    initializing = false;
   
    // Copy the properties over onto the new prototype
    for (var name in prop) {
      // Check if we're overwriting an existing function
      prototype[name] = typeof prop[name] == "function" &&
        typeof _super[name] == "function" && fnTest.test(prop[name]) ?
        (function(name, fn){
          return function() {
            var tmp = this._super;
           
            // Add a new ._super() method that is the same method
            // but on the super-class
            this._super = _super[name];
           
            // The method only need to be bound temporarily, so we
            // remove it when we're done executing
            var ret = fn.apply(this, arguments);        
            this._super = tmp;
           
            return ret;
          };
        })(name, prop[name]) :
        prop[name];
    }
   
    // The dummy class constructor
    function Class() {
      // All construction is actually done in the init method
      if ( !initializing && this.init )
        this.init.apply(this, arguments);
    }
   
    // Populate our constructed prototype object
    Class.prototype = prototype;
   
    // Enforce the constructor to be what we expect
    Class.prototype.constructor = Class;
 
    // And make this class extendable
    Class.extend = arguments.callee;
   
    return Class;
  };
})();




var Vehicle = Class.extend({
  init: function(wheels) {
    this.wheels = wheels;
  }
});


//Example
var Vehicle = Class.extend({
  init: function(wheels) {
    this.wheels = wheels;
  }
});

var Truck = Vehicle.extend({
  init: function(hp, wheels) {
    this.horsepower = hp;
    this._super(wheels);
  },

  printInfo: function() {
    console.log('I am a truck and I have ' + this.horsepower + ' hp. and '+this.wheels +' wheels');
  }
});

var t = new Truck(350,4);
t.printInfo();

var Person=Class.Create({
walk:function(){
console.log("I am Walking");
},

sayHello:function(){
    console.log("Hello there");
}

});

var Student=Person.Extend({
sayHello:function(){
console.log("Hi i am a student");
},

sayGoodBye:function(){
   console.log("Good Bye");
}        

});

var HiSchoolStudent=Student.Extend({
study:function(){
console.log("I study in high school");
}
});

var Vehicle = Class.Create({
run:function(){
console.log("I am a vehicle and I run");
}
});

var Truck = Vehicle.Extend({
init: function(hp, wheels) {
this.horsepower = hp;
this.wheels = wheels;
},

printInfo: function() {
console.log('I am a truck and I have ' + this.horsepower + ' hp. and '+this.wheels +' wheels');
}

});

var student1 = new HiSchoolStudent();
student1.study();
student1.sayHello();
student1.walk();
student1.sayGoodBye();

var obj=new Truck();
obj.run();
obj.init();
obj.printInfo(350,4);

console.log(obj instanceof Vehicle);