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Basic JavaScript

JS Tutorial JS Introduction JS Where To JS Output

JS Syntax

JS Syntax JS Statements JS Comments JS Variables JS Let JS Const JS Types

JS Operators

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JS Loops

JS Loops JS Loop for JS Loop while JS Break JS Continue JS Control Flow

JS Strings

JS Strings JS String Templates JS String Methods JS String Search JS String Reference

JS Numbers

JS Numbers JS Number Methods JS Number Properties JS Number Reference JS Bitwise JS BigInt

JS Functions

Function Path Function Intro Function Invocation Function Parameters Function Returns Function Arguments Function Expressions Function Arrow Function Quiz

JS Objects

Object Path Object Intro Object Properties Object Methods Object this Object Display Object Constructors

JS Scope

JS Scope JS Code Blocks JS Hoisting JS Strict Mode

JS Dates

JS Dates JS Date Formats JS Date Get JS Date Set JS Date Methods

JS Arrays

JS Arrays JS Array Methods JS Array Search JS Array Sort JS Array Iterations JS Array Reference JS Array Const

JS Sets

JS Sets JS Set Methods JS Set Logic JS Set WeakSet JS Set Reference

JS Maps

JS Maps JS Map Methods JS Map WeakMap JS Map Reference

JS Iterations

JS Loops JS Iterables JS Iterators JS Generators

JS Math

JS Math JS Math Reference JS Math Random

JS RexExp

JS RegExp JS RegExp Flags JS RegExp Classes JS RegExp Metachars JS RegExp Assertions JS RegExp Quantifiers JS RegExp Patterns JS RegExp Objects JS RegExp Methods

JS Data Types

JS Destructuring JS Data Types JS Primitive Data JS Object Types JS typeof JS toString JS Type Conversion

JS Errors

JS Errors Intro JS Errors Silent JS Error Statements JS Error Object

JS Debugging

Debugging Intro Debugging Console Debugging Breakpoints Debugging Errors Debugging Async Debugging Reference

JS Conventions

JS Style Guide JS Best Practices JS Mistakes JS Performance

JS References

JS Statements JS Reserved Keywords JS Operators JS Precedence

JS Versions

JS 2026 JS 2025 JS 2024 JS 2023 JS 2022 JS 2021 JS 2020 JS 2019 JS 2018 JS 2017 JS 2016 JS Versions JS 2015 (ES6) JS 2009 (ES5) JS 1999 (ES3) JS IE / Edge JS History

JS HTML

JS HTML DOM JS Events JS Projects New

JS Advanced

JS Temporal  New JS Functions JS Objects JS Classes JS Asynchronous JS Modules JS Meta & Proxy JS Typed Arrays JS DOM Navigation JS Windows JS Web APIs JS AJAX JS JSON JS jQuery JS Graphics JS Examples JS Reference


JavaScript Syllabus


Introduction

The W3Schools JavaScript Tutorial is comprehensive and beginner-friendly.

It will give you a fundamental knowledge of JavaScript.

It is designed for beginners and requires no prior experience with programming.

The content has been carefully made to be bite-sized, simple, and easy to understand.

The content has been proven by millions of users over the years. It is updated and improved frequently.

The syllabus outline and its sequence are structured so you can learn JavaScript step by step, from the introduction to creating your first application with JavaScript.

Get Started With JavaScript »


Learning Outcomes

  • Learn how JavaScript works and how it is used in web development.
  • Make web pages interactive by typing and running JavaScript code.
  • Use variables to store and change data.
  • Use data types and operators to do logic and calculations.
  • Organize and reuse code by functions.
  • Conditions, like "if" and "else," let you control how a program runs. Learn how to use them.
  • Use loops (like for and while) to do things over and over again.
  • Learn how to use Document Object Model (DOM) to change HTML elements.
  • Make interactive user experiences by handling events like button clicks and form submissions.
  • Debugging JavaScript code.

Note: Are you a teacher teaching JavaScript? W3Schools Academy is a toolbox of features that can help you teach. It offers classroom features such as pre-built study plans, classroom administration and much more. Read more about Academy here.


Which Subjects Are JavaScript Relevant For?

  • Computer Science (CS) / Information Technology (IT):
    JavaScript is a fundamental programming language used to teach coding, algorithms, and how to make websites that people can interact with.
  • Math:
    JavaScript can be used for mathematical operations and algorithms. It can help you develop logical thinking and problem-solving skills.
  • Physics and Engineering:
    JavaScript can be used for simulations and modeling to help you understand advanced concepts and engineering problems better.
  • Digital Media:
    JavaScript is used to make websites interactive, making your digital projects more relevant and interesting.
  • Business and Entrepreneurship:
    JavaScript makes your web applications, prototypes, and digital presentations interactive.
  • Art and Design:
    JavaScript lets you make animations, interactive graphs, and can be used for generative art.
  • STEM (Science, Technology, Engineering, Mathematics):
    JavaScript as a programming language can be an important part of technology-based projects because it teaches students about logic, automation, and how to use code in the real world.
  • Robotics and the Internet of Things (IoT):
    JavaScript is used by some platforms to program robots and IoT devices.

Get Started



Activities

In this tutorial we offer different activities for you to learn JavaScript for free:


Sign in to Track Progress

You can also create an account to track your progress.

As a signed-in user, you get access to features such as:

  • Learning paths
  • Sandbox and lab environments
  • Achievements
  • And much more!

Sign Up


Overview of the Modules

Get Started


Sandbox and Lab Environment

JavaScript, like any other programming language, is best learned by working hands-on with code.

Easily try code with our "Try it Yourself" editor.

Here, you can edit JavaScript code and view the result:

Example

document.getElementById("demo").innerHTML = "Hello JavaScript";
Try it Yourself »

If you want to explore more and host your JavaScript project, we have a feature called Spaces that allows you to build, test and deploy static websites.

Here you get a secure sandbox environment called Spaces, where you can practice coding and test projects in real-time.

Spaces allow you to test, build, and deploy code. This includes a W3Schools subdomain, hosting, and secure SSL certificates.

Spaces require no installation and run directly in the browser.

Features include:

  • Collaboration
  • File navigator
  • Terminal & log
  • Package manager
  • Database
  • Environment manager
  • Analytics
Dynamic Spaces

Create a Spaces Account


JavaScript Certification

W3Schools offers an end-of-pathway certification program.

Here you can take exams to get certified.

The JavaScript exam is a test that summarizes the W3Schools JavaScript syllabus.

After passing the exam you get the "Certified JavaScript Developer" Certification.

There are two different types of certifications:

  • Non-adaptive
  • Adaptive

The non-adaptive is pass or no pass.

The adaptive certification is adaptive and graded; students will get a grade from intermediate, advanced to professional.

Buy Certificate »


Are You a Teacher?

Are you interested in learning how you can use W3Schools Academy to Teach JavaScript?

Watch a demo of W3Schools Academy. You'll see how it works, and discover how it can make teaching programming easier and more engaging.

Watch Demo »




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