Though some of the concepts in this course are still relevant, overall this course does not reflect our current course standards or industry best practices.

Check out a free preview of the full Backbone.js (with Introduction to Testing) course:
The "Backbone Dependencies: Underscore" Lesson is part of the full, Backbone.js (with Introduction to Testing) course featured in this preview video. Here's what you'd learn in this lesson:

Underscore is a utility library. It includes useful utilities for Objects, Arrays, Functions, etc.

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