Master JavaScript for Interviews Free Notes + Q&A with The Mern Guy

Everything you need to walk into a JavaScript interview prepared — completely free.

This pack covers 25 core JavaScript topics, structured from basics to advanced:

- Fundamentals — variables, scope, hoisting, coercion

- Core concepts — closures, this, prototypes, async/await, promises

- Advanced — event loop internals, memory management, design patterns, generators, proxies, and more

For every topic, you get:

✅ A clear, no-fluff explanation of the concept

✅ A practical code example showing it in action

✅ 5 real interview questions with model answers

Available as both a detailed PDF (for deep study) and quick-reference image cards (for fast revision before an interview).

Built from real technical interview experience — not generic textbook theory. If you're prepping for a MERN/JavaScript developer role, this is the notes set I wish I'd had starting out.

Download it, work through it, and follow @thememguy on Instagram for more interview prep content, including the React and Node.js/Backend bundles coming next.