Working with binary data is essential when dealing with files, network protocols, or low-level data manipulation in JavaScript. The language provides several built-in objects for handling raw binary data efficiently.

In this unit, you’ll learn how to work with binary data in JavaScript. We’ll cover ArrayBuffer, the fundamental object representing raw binary data, and ArrayBufferView for accessing that data. You’ll learn about typed arrays for working with specific numeric formats, DataView for flexible byte-level access, and Data URLs for encoding binary data as strings.

Understanding these concepts is crucial when working with file uploads, WebSockets, Web Audio, WebGL, or any situation where you need to manipulate raw bytes directly.

Lessons in this unit: