JavaScript Objects (Pt 2)

All JavaScript functions are objects in their own right. This means that when you declare a function you are actually creating a new object and when you use the new keyword you are creating a new instance of the object associated with the stated function.

Example:
Foo(bar) {…} – creates a new object called Foo.
var myFoo = new Foo(bar); - creates a new instance of a Foo object and assigns it to myFoo.

If you create a function object function foo() {…} and then assign another function to it foo.bar = function() {…}; the bar method will only be available to foo and not to any new instances of foo. So you can do foo.bar but you cannot do var myFoo = new foo(); myFoo.bar(); I have not worked out why yet.

JavaScript Object (Pt 1)

JavaScript objects are conceived as a collection of properties. This collection can include values, functions, and other objects. A JavaScript object constructor is no different from any other function. As far as I can tell, any function used with the new keyword will result in a new object being created. It’s down to the individual developer to make sure that the function actually does something meaningful to the object being created.