JS this

gistfile1.txt

If you using a function with an outside object, use this.
The this pseudo parameters contains a reference to the object of invocation.
this allows a method to know what object it is concerned with.
this allows a single function object to service many objects.
this is key to prototypal inheritance.

allows a single function to work on many objects
the way the function knows which object it is working on is by the this binding

this is a bonus parameter.  Its value depends on the calling form.
this gives methods access to their objects
this is bound at invocation time.


Invocation form       this
function              the global object undefined
method                the object
constructor           the new object
apply                 argument