class-js.js

//function to define a class
// actual version is a rewrite by anieto2k: http://www.anieto2k.com
//params:
//  @current : Object with the methods and attributes of the class
//  @previous : Class from witch we wante to extend (optional)
JotaClass = function(current,previous){
    previous = typeof previous == 'undefined' ? {} : previous.prototype;
  for(p in previous){
        if(typeof current[p] == 'undefined') current[p] = previous[p];
        else if(typeof previous[p] == 'function'){
              current[p] = (function(tmp){
                                              return function(){
                                          this.parent = arguments.callee.parent;
                                                            return tmp.apply(this, arguments);
                                            }
                                        })(current[p]);
            current[p].parent = previous[p];
        }
    }
    var construct = function(){
      if(this.init) this.init.apply(this,arguments);
    }
    construct.prototype = current;
    construct.constructor = Class;
    return construct;
}

//example of Class definition
Persona = JotaClass({
    init: function(nombre){
        this.nombre = nombre;
    },
    hola: function(){
        alert(this.nombre);
    } 
});

//Example of inhiritance
PersonaExt = JotaaClass({
	hola: function(){
		alert('gonna call parent');
		this._super.hola();
	}
},Persona);

//instance and calling methods
p1 = new Persona('lolo');
p2 = new PersonaExt('lolo')

p1.hola();
p2.hola();