jQuery Forum

$.each uses function.call to control scope:
http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Reference:Global_Objects:Function:call
"fn.call( thisArg [, arg1 [, arg2 [, ...]]] );
thisArg - Determines the value of this inside fn. If thisArg is null
or undefined, this will be the global object. Otherwise, this will be
equal to Object(thisArg) (which is thisArg if thisArg is already an
object, or a String, Boolean, or Number if thisArg is a primitive
value of the corresponding type). Therefore, it is always true that
typeof this == "object" when the function executes."

> Is this (the object-wrapped this) the intended behaviour?  If so the
> example in the callback argument inhttp://docs.jquery.com/Utilities/jQuery.each#objectcallback
> is incorrect as it states "this; // == valueOfElement"
I don't know if incorrect or not, but blurry for sure.
I updated that comment.
> The same problem applies for jQuery.map, but i'd imagine it's because
> it's implemented with each.
Updated the respective comment for map and grep, but changed the
unclear 'unmapped' for '== window'.
Note the same doesn't apply to map (and grep) because they don't pass
the element as scope of the function.
And.. map isn't implemented with each, all these core functions avoid
using each to maximize perfomance.
Cheers
--
Ariel Flesler
http://flesler.blogspot.com/