New jQuery release version 1.3

Yesterday jQuery released their new version, number 1.3. They did a lot af changes / bugfixing, performance improvements.

The big features are:

  • Sizzle: A sizzlin’ hot CSS selector engine.
  • Live Events: Event delegation with a jQuery twist.
  • jQuery Event Overhaul: Completely rewired to simplify event handling.
  • HTML Injection Rewrite: Lightning-fast HTML appending.
  • Offset Rewrite: Super-quick position calculation.
  • No More Browser Sniffing: Using feature detection to help jQuery last for many more years to come.

They did a pretty good job on the performance:

Selector performance, 49% faster:

Delegation filtering performance, 30x times faster:

Element insertion performance, 6x faster:

Offset rewrite, 3x times faster:

There is also a new API browser released with the following features:

  • All the latest jQuery and jQuery UI documentation.
  • The ability to mark pages as favorites for those pages you keep wanting to return to.
  • Syntax highlighting in the code examples
  • Live running of examples within the browser
  • Links to edit and experiment with the code examples

You can find it here:

The new version you can download here:

Downloading jQuery

Or you can use the google hosted version:

Google AJAX Libraries API

More info:
Blog: jQuery 1.3 and the jQuery foundation
Release notes


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