jQuery does not have a method for comparing arrays. However the Underscore library does have such a method: isEqual, and it can handle a variety of other cases (like object literals) as well. To stick to the provided example:
var a=[1,2,3]; var b=[3,2,1]; var c=new Array(1,2,3); alert(_.isEqual(a, b) + "|" + _.isEqual(b, c)); By the way: Underscore has lots of other methods that jQuery is missing as well, so it's a great complement to jQuery.
