Utility method to compute the difference between two arrays. AMD and CommonJS compatible; works in Node.js and the browser.
$ npm install ar
70CB
ray-difference
var array1 = [1, 2, 3];
var array2 = [2, 3, 4];
difference(array1, array2); // yeilds [1, 4]
Copyright (c) 2013 Mike Pennisi
Licensed under the MIT Expat license.