jQuery Combine

Combine objects using basic set theory – such as union, intersection, difference, and symmetric difference. This means you can add two objects together and only get the attributes that are unique to each object, or other combination.

jQuery Compare

A lightweight jQuery plugin that helps with array and object comparisons. The plugin offers a few configurable options to help get the type of matching that you’re after. It supports callbacks (error and succcess) and method chaining.