javascript lesson 5 --very important

the objects in javascript are not similar to that of 'C++'

the objects can store all kinds of variables , including functions.

objects are like arrays, but in arrays the keys are numbers and values can be in anything
but in objects , keys can be anything as well.

the syntax for objects is

var object = {
key : value,
key : value,
key :value
};

ex:
var obj = {
 name : "felix",
age : 22
};

***actually , it is curious to see that there is no concept of 'class' in javascript. All the object are prototype-based inheritance schemes.
new objects are created by copying other objects(instead of being instantiated from a class template)

methods live directly in objects instead of classes

inheritance is done through delegation

Javascript has a nice concept tweak of constructors, you can copy existing objects with constructors as well create objects out of thin air

*** two important articles about inheritance are here
http://javascript.crockford.com/prototypal.html
http://javascript.crockford.com/inheritance.html

we can actually create objects here in two ways

the previous above method is first method with the use of {}
the second method is by the use of the constructors.

ex:

var myobject = new Object();      //this tells computer to make a new object type

myobject.name = "felix";  //we can use this method or method below which uses key
myobject["age"] = 22;