The benefits to having some JavaScript executed before the page has finished loading (before the onload event) is huge, and most of the JavaScript frameworks such as YUI, DoJo, prototype, MooTools, and jQuery have implementations to handle this case. In this tutorial, we will be creating a simple o2.ready module …

For those who haven’t heard: I’ve changed jobs. And it was a truly fast transitional week, leaving LiveGO and joining the grou.ps family. My work hours at grou.ps are a little “shifted” to compansate the 10-hour lag between the grou.ps HQ at Palo Alto, and the Istanbul Development Office. This …

Functions are powerful construct in JavaScript. In this tutorial, we are going to do some advanced function manipulations with. Do you like Reflection? Then you’ll love this tutorial

Creating an AJAX object is easier than you may think. We will explore it, step by step, in this tutorial. An typical AJAX interface should have the following properties, at the bare minimum: Ability to send HTTP GET requests Ability to send HTTP POST requests Ability to send SYNC AJAX …

Before we start, here’s a link to what we’ll get in the end: http://o2js.com/documentation/logical/o2.html Do I Need to Document my Code? Short answer is: Yes, you do. Here’s a longer answer…

While code-reviewing o2.js modules, I realized that I had done a serious mistake. … well, actually my “serious” mistake, turned out to be a “not that serious” caveat

String is a data type that any developer spends most of time working with. We format, we replace, we sanitize, we prettify, we trim, we encode, we decode, we serialize… Strings tirelessly, over and over And it’s virtually impossible to think about a JavaScript framework without some kind of a …

We’ve seen before that everything in JavaScript is an object. With a special exception. JavaScript‘s concept of “nothing”ness is a little confusing; since it defines two variables for non-existence: null, and undefined. And these two objects deserve a deeper look. null vs undefined undefined Any property that has not been …

Each language has a way of doing the right things and doing things right; and JavaScript is no exception The main trick with JavaScript is to avoid taking the easy path. JavaScript is a versatile “language” and as the environment it is executed in is very forgiving, it is easy …

Reconsidering of the is function we created in our former eqality post, I realized that it’s a pretty reusable piece of code. Thus, I decided to create an o2.Validator module out of it.