Blogging Task 4

9 10 2009

JQUERY 1.3
new release of jQuery features of this release details from the website:
1. jQuery has a brand new CSS selector engine – nicknamed ‘Sizzle’. We wanted an engine that was:
Faster than our current engine for the most commonly used selectors. (49% faster)
Fully extensible (we had to sacrifice some of our extensibility in favor of performance in past versions of jQuery).
2. jQuery now supports “live events” – events that can be bound to all current – and future – elements. Using event delegation, and a seamless jQuery-style API, the result is both easy to use and very fast. A fast selector engineusing advanced selector techniques
3. All of the code related to injecting HTML into a document (such as the append, prepend, before, and after methods) has been overhauled. When we were analyzing jQuery applications we found this to be one of the most common bottlenecks – and thus was in direct need for an improvement. The functionality provided is identical to what was in previous releases of jQuery but with the added benefit of being much, much faster (about 6x faster overall)

4. Brandon Aaron felt that a full rewrite of the offset method was due for 1.3. Re-written from scratch, it not only handles cross-browser issues better, but does so much faster:
4. Browser sniffing is a technique in which you make assumptions about how a piece of code will work in the future. Generally this means making an assumption that a specific browser bug will always be there – which frequently leads to code breaking when browsers make changes and fix bugs.
5. Instead we use a technique called feature detection where we simulate a particular browser feature or bug to verify its existence. We’ve encapsulated all the checks that we use in jQuery into a single object: jQuery.support. More information about it, feature detection, and what this feature provides can be found in the jQuery.support documentation.
(http://blog.jquery.com/2009/01/14/jquery-13-and-the-jquery-foundation/)

Advertisements

Actions

Information

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s




%d bloggers like this: