jQuery.map calls with elements reversed

[joost_m]

This correctly returns an array with the elements 'a', 'b' and 'c':

$(['a','b','c']).map(function(elem,index) { return this; });

This incorrectly returns the indices:

$(['a','b','c']).map(function(elem,index) { return elem; });

And this incorrectly returns the elements:

$(['a','b','c']).map(function(elem,index) { return index; });

So the arguments to the callback are reversed, if the documentation of $.map is to be believed.

[dmethvin]

You're confusing jQuery.map() with jQuery().map()

​http://api.jquery.com/map/

The args are reversed but it would break a lot of code to change it.