findNth()Gets the nth value matching target in subject.
target in.subject is an array this must either be a function or a regular expression which will be tested against each element in subject.  If subject is a string this must be a regular expression which will be tested against it to find all of the matches.0 represents the first occurrence whereas -1 represents the last.target within subject.  If not found undefined will be returned.This function directly requires the following functions which are included automatically:
findNthIndex()target in subject.
            has()typeOf()This function is directly required by the following function:
findNthIndex()target in subject.