jQuery 1.2.1 Released

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This is a bug fix release for jQuery 1.2. You can view the full list of what was fixed on the bug tracker.

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Important Changes

Relative Animations

There was a serious error in the API for the new relative animations that caused a conflict with existing animation styles. To resolve this, in order to do a relative animation, you must now use the following syntax:
$(...).animate({ height: "+=50px", width: "-=20%", fontSize: "+=2em" });

With += meaning “Add to the current position” and -= meaning “Take away from the current position”.

.eq()

Due to some very-persuasive arguments, and a great deal of reconsideration, .eq() has been brought back. A great number of plugins rely on this single method – and the alternative provided by .slice() simply wasn’t as elegant a solution as what was originally provided.