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// Beginner → Advanced

JavaScript Course — 13 Topics, Interview-Ready

A free, beginner-to-advanced JavaScript course with code examples, common pitfalls and real interview questions for every topic. Built for engineers who want to ship and crack interviews.

🚀 Start the course — Introduction to JavaScript

📚 Full curriculum

  1. 01🚀
    Introduction to JavaScript — What It Is & Why It Runs The Web
    Beginner•⏱️ 5 min•🎯 5 interview Qs
    →
  2. 02📦
    JavaScript Variables Explained — var vs let vs const
    Beginner•⏱️ 7 min•🎯 5 interview Qs
    →
  3. 03🔢
    JavaScript Data Types — Primitives, Objects & Type Coercion
    Beginner•⏱️ 8 min•🎯 5 interview Qs
    →
  4. 04➕
    JavaScript Operators — Arithmetic, Logical & The Tricky Ones
    Beginner•⏱️ 7 min•🎯 5 interview Qs
    →
  5. 05🎯
    JavaScript Functions — Declarations, Expressions & Arrow Functions
    Beginner•⏱️ 9 min•🎯 5 interview Qs
    →
  6. 06🧠
    JavaScript Scope & Closures Explained — With Real Examples
    Intermediate•⏱️ 10 min•🎯 5 interview Qs
    →
  7. 07🗂️
    JavaScript Arrays & Objects — Methods You Actually Need
    Intermediate•⏱️ 10 min•🎯 5 interview Qs
    →
  8. 08🌐
    JavaScript DOM Manipulation — Select, Modify & Create Elements
    Intermediate•⏱️ 9 min•🎯 5 interview Qs
    →
  9. 09🖱️
    JavaScript Events — Listeners, Bubbling & Delegation
    Intermediate•⏱️ 9 min•🎯 5 interview Qs
    →
  10. 10✨
    ES6+ Features — Destructuring, Spread, Template Literals & More
    Intermediate•⏱️ 10 min•🎯 5 interview Qs
    →
  11. 11⏳
    JavaScript Promises and Async/Await — Asynchronous Code Made Simple
    Advanced•⏱️ 12 min•🎯 5 interview Qs
    →
  12. 12⚠️
    JavaScript Error Handling — try/catch, Custom Errors & Async Errors
    Intermediate•⏱️ 8 min•🎯 5 interview Qs
    →
  13. 13🧬
    Advanced JavaScript — Prototypes, this, Hoisting & The Event Loop
    Advanced•⏱️ 12 min•🎯 6 interview Qs
    →