Object Oriented Programming (OOP) Primer

Oct 11th, 2010 | Filed under JS OOP

What is Object Oriented Programming?  Why use Object Oriented Programming?  How does Object Oriented Programming apply to JavaScript?  Those are the questions I am going to try and answer for you.

What is Object Oriented Programming?

Object Oriented ProgrammingW (OOP) in the simplest of forms is grouping all of the data and functions that operate on a particular thing together.  An example might help.  Suppose you were told to build a banner that changed content at regular intervals and the content for the banner was to be retrieved from an http URL.  We know we are going to need a variable to hold the change interval for the banner.  We will probably need a variable to hold the URL that we get the banner content from.  We might need a function to send the request for the new banner data.  We might need a function to render (display) the new banner data.  And of course we need some sort of way to control it.

Now we know all of the parts that are required to build the dynamic banner.  So now lets design our object. Read more…

OnDemand Javascript Loading

Oct 11th, 2010 | Filed under JS OOP, Prototype

Do you know what contributes to slow page loading?  First of all it is the total size of all your scripts, css, and wireframe (html).  After that the number or connections that you make to the server to load the data.  There is 1 connection for each script, 1 for each css file, 1 for each image in your html, and 1 for each ajax request you make.  Most browsers allow about 8 simultaneous connections.  If you use more than 8 the extra connections have to wait for one of the eight to finish and then they start.

Read more…

Google is now hosting some javascript libraries

Oct 11th, 2010 | Filed under google
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Google is now hosting the following javascript libraries with more to come.

jQuery
jQuery UI
prototype
script_aculo_us
MooTools
dojo

Object Oriented Javascript

Oct 11th, 2010 | Filed under JS OOP

Have you ever wondered if there was a way to write javascript  that looks almost like Java?  Well, there is thanks to the guys that wrote prototype.  I wrote up an example to help get you started “Object Oriented Javascript”.

JustJS makes its debut

Aug 7th, 2008 | Filed under Prototype

Here at JustJs.org we aim to provide you wealth of javascript widgets, scripts, and snippets.