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jQuery v1.3.0 has been released!

19 January 2009

A long wait for this release, finally jQuery has released version 1.3 on its birthday (14 Jan).

New features on 1.3 are:

  • Replaced old CSS selector engine with Sizzle, a standalone framework which is developed by John Resig and donated to the Dojo Foundation.
  • A new event API, Live Events, that can binds event to the future DOM elements.

Rewritten features are:

  • Standardized jQuery Event according to W3C standards and makes it work smoothly across all browsers.
  • Rewritten HTML Injection, and it's 6x faster than before.
  • Rewritten .offset() from scratch, and it's 3x faster than before.
  • Deprecated browser sniffing API, replaced by a new technique called 'feature detection' that simulate a particular browser feature or bug to verify its existence. This feature detection is encapsulated into a new object, jQuery.support.

The release note of this version can be read at here.

Trivia:

Version file size comparison:
jQuery v1.3.0 (115KB), minified (53.7KB) and gzipped (17.8KB)
jQuery v1.2.6 (97.8KB), minified (54.5KB) and gzipped (15.6KB)