Course syllabus

Module 1: Getting Started with JavaScript

3 lessons

Module 2: Language Fundamentals

5 lessons

Module 3: Conditions and Loops

4 lessons

Module 4: Functions, Scope, and Closures

6 lessons

Module 5: Arrays, Objects, and Collections

6 lessons

Module 6: Modern JavaScript, OOP, and Data

6 lessons

Module 7: DOM and Browser APIs

5 lessons

Module 8: Asynchronous JavaScript

5 lessons

Module 9: Tooling, Testing, Debugging, and Security

5 lessons

Module 10: Projects and Guided Practice

2 lessons

Module 11: JavaScript Interview Questions and Answers

5 lessons

JavaScript Tutorial

Module 1: Getting Started with JavaScript

Introduction to JavaScript

Understand JavaScript, its role on the web, and how the language differs from Java.

6 minute lessonBeginner to intermediate

JavaScript is a programming language used to add behaviour to websites and to build applications beyond the browser. In a browser it can respond to clicks, update page content, validate forms, and call web APIs. With runtimes such as Node.js, JavaScript can also run on servers and command-line tools.

JavaScript and Java are different languages despite their similar names. JavaScript is dynamically typed: a variable can refer to values of different types over its lifetime. Java is generally statically typed. JavaScript also treats functions as values and uses prototypes for object delegation.

What you will learn#

This course moves from syntax and data types through functions, arrays, objects, the DOM, asynchronous code, tooling, projects, and interview preparation. You can follow the syllabus in order because later lessons build on earlier concepts.

A first expression#

JavaScript

console.log("Hello, JavaScript!");
console.log(2 + 3);

console.log writes values to the developer console. The first statement logs text; the second evaluates an arithmetic expression and logs 5.

Where JavaScript runs#

Browser: interact with web pages and browser APIs.
Node.js: run JavaScript outside the browser, including scripts and server applications.
Other embedded runtimes: some tools embed JavaScript to support scripting.

Practice#

In your own words, explain two things JavaScript can do in the browser and one thing it can do with Node.js. Then run the two examples above.

Loading lesson...

JavaScript Tutorial

Module 1: Getting Started with JavaScript

Introduction to JavaScript

Understand JavaScript, its role on the web, and how the language differs from Java.

6 minute lessonBeginner to intermediate

What you will learn#

A first expression#

JavaScript

console.log("Hello, JavaScript!");
console.log(2 + 3);

console.log writes values to the developer console. The first statement logs text; the second evaluates an arithmetic expression and logs 5.

Where JavaScript runs#

Browser: interact with web pages and browser APIs.
Node.js: run JavaScript outside the browser, including scripts and server applications.
Other embedded runtimes: some tools embed JavaScript to support scripting.

Practice#

In your own words, explain two things JavaScript can do in the browser and one thing it can do with Node.js. Then run the two examples above.