N.J. Stat. Ann. § 40:48-8.25a

In any municipality in which the provisions of the act of which this act is amendatory and supplementary is presently operative pursuant to an ordinance and referendum thereon approving the same heretofore adopted and held in accordance with the provisions of said act, any ordinance to adopt the provisions of this amendatory and supplementary act shall, upon adoption, become operative within the municipality without any requirement to submit the same to the voters for their approval or disapproval.