Beginner to intermediate

JavaScript Tutorial

A structured JavaScript course from first principles to modern language features, browser development, asynchronous programming, projects, and interview preparation.

11 modules
52 lessons
About 438 min reading

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What you will learn

Write readable JavaScript using modern language features and sound programming practices.
Understand functions, scope, closures, objects, prototypes, and classes.
Build interactive browser features with the DOM, events, forms, and web storage.
Work with promises, async/await, HTTP APIs, and the JavaScript event loop.
Debug, test, and secure small applications, then build portfolio-ready practice projects.
Prepare for common JavaScript interview questions with explained answers and coding exercises.

Prerequisites

No prior JavaScript experience required
Basic computer and file-management skills

Course syllabus

Select any lesson to open it.

Module 1: Getting Started with JavaScript

3 lessons

Understand what JavaScript does, where it runs, and how to write and inspect your first program.

Module 2: Language Fundamentals

5 lessons

Learn variables, value types, conversions, operators, and strings.

Module 3: Conditions and Loops

4 lessons

Control which statements run and repeat work without duplicating code.

Module 4: Functions, Scope, and Closures

6 lessons

Create reusable functions and understand how JavaScript resolves variables and function context.

Module 5: Arrays, Objects, and Collections

6 lessons

Store collections of values, transform data, and model objects safely.

Module 6: Modern JavaScript, OOP, and Data

6 lessons

Explore prototypes, classes, ES modules, serialization, dates, regular expressions, and iteration.

Module 7: DOM and Browser APIs

5 lessons

Connect JavaScript to web pages using the DOM, events, forms, and storage.

Module 8: Asynchronous JavaScript

5 lessons

Handle delayed work, network requests, promises, async/await, and the event loop.

Module 9: Tooling, Testing, Debugging, and Security

5 lessons

Use developer tools, npm, tests, performance techniques, and safer coding practices.

Module 10: Projects and Guided Practice

2 lessons

Apply the course concepts by building small browser projects with meaningful states and error handling.

Module 11: JavaScript Interview Questions and Answers

5 lessons

Review key language concepts, functions and closures, objects, asynchronous behaviour, browser APIs, and coding exercises.

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