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What if you could go from zero to JavaScript hero—all in one bundle? This masterclass shows you how.

JavaScript powers everything from interactive websites to powerful web apps—and it’s one of the most in-demand programming languages in the world. Whether you're brand new to coding or switching from another language, this course gives you the hands-on foundation you need to start building with confidence.

At some point, writing JavaScript isn’t the challenge—it’s how you structure it, scale it, and reason about it.

Writing JavaScript is only half the journey—getting it live is where things get real.

Featuring 15 code-based challenges with unlimited attempts, this hands-on test lets you sharpen your XSS exploitation skills using real tools. Use a built-in JavaScript editor to simulate attacks and reconnaissance techniques such as understanding what Cross-Site Scripting and sandboxing are, exfiltrating data with JavaScript APIs, exploiting various types of XSS, and learning how to exploit different types of data. Each task mirrors real-world exam scenarios, helping you prepare for certification by actively scripting and executing simulated client-side attacks.