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Basic JavaScript

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JS Syntax

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JS Operators

JS Operators
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JS If Else

JS If Conditions
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JS Loops

JS Loops
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JS Strings

JS Strings
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JS Numbers

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

JS Functions

JS Functions
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JS Objects

JS Objects
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JS Scope

JS Scope
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JS Dates

JS Dates
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JS Temporal

JS Temporal  New
Temporal Study Path Temporal Intro Temporal vs Date Temporal Duration Temporal Instant Temporal PlainDateTime Temporal PlainDate Temporal PlainYearMonth Temporal PlainMonthDay Temporal PlainTime Temporal ZonedDateTime Temporal Now Temporal Arithmetic Temporal Formats Temporal Mistakes Temporal Migrate Temporal Reference

JS Arrays

JS Arrays
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JS Sets

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

JS Maps

JS Maps
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JS Iterations

JS Loops
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JS Math

JS Math
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JS RegExp

JS RegExp
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JS DataTypes

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

JS Errors

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

JS Debugging

JS Debugging
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JS Conventions

JS Style Guide
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JS Reference

JS Statements
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JS Projects

JS Projects New
JS Counter JS Event Listener JS To-Do List JS Modal Popup JS Form Validation

JS Versions

JS 2026
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JS HTML

JS HTML DOM
HTML DOM HTML DOM API Selecting Elements Changing HTML Changing CSS Form Validation DOM Animations Document Reference Element Reference
JS Events
Intro to Events Mouse Events Keyboard Events Load Events Timing Events Manage Events Event Examples Event Listener

JS Advanced

JS Functions
Functions Advanced Function Definitions Function Callbacks Function this Function Call Function Apply Function Bind Function IIFE Function Closures Function Reference Function Quiz
JS Objects
Object Study Path Object Definitions Object this Object Iterations Object Get / Set Object Management Object Protection Object Prototypes Object Reference
JS Classes
JS Classes JS Class Inheritance JS Class Static
JS Asynchronous
Async Path Async Intro Async Timeouts Async Callbacks Async Promises Async Await Async Fetch Async Debug Async Reference
JS Modules
Modules Intro Modules Export Modules Import Modules Namespace Modules Dynamic
JS Meta & Proxy
Meta Programming Meta Reflect Meta Proxy Meta Reference
JS Typed Arrays
Typed Arrays Typed Methods Typed Reference Array Buffers DataViews JS Atomics
JS DOM Navigation
DOM Navigation DOM Nodes DOM Collections DOM Node Lists
JS Windows
JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies
JS Web APIs
Web APIs Intro Fetch API Geolocation API Web History API Web Pointer API Web Storage API Validation API Web Worker API
JS AJAX
AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples
JS JSON
JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON Server JSON PHP JSON HTML JSON JSONP
JS jQuery
jQuery Selectors jQuery HTML jQuery CSS jQuery DOM
JS Graphics
JS Graphics JS Canvas JS Plotly JS Chart.js JS Google Chart JS D3.js
JS Examples
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JS Reference


JavaScript Tutorial

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JS

Learn JavaScript

The Programming Language of the Web

JavaScript is easy to learn.

This tutorial covers everything from basic JavaScript up to the latest 2026 version.

Start learning JavaScript now »

Examples in Each Chapter

With our Try it Yourself editor, you can edit the source code and view the result.

Example

My First JavaScript

Try it Yourself »

Use the Menu

We recommend reading this tutorial, in the sequence listed in the menu.

If you have a large screen, the menu will always be present on the left.

If you have a small screen, open the menu by clicking the top menu sign ☰.

Learn by Examples

Examples are better than 1000 words.

Examples are often easier to understand than text explanations.

This tutorial supplements all explanations with clarifying Try it Yourself examples.

If you try all the examples, you will learn a lot about JavaScript, in a very short time!

JavaScript Examples »

Why Study JavaScript?

JavaScript is one of the 3 languages all web developers must learn:

  1. HTML to define the content of web pages

  2. CSS to specify the layout of web pages

  3. JavaScript to program the behavior of web pages

Learning Speed

In this tutorial, the learning speed is your choice.

Everything is up to you.

If you are struggling, take a break, or re-read the material.

Always make sure you understand all the "Try-it-Yourself" examples.

The only way to become a clever programmer is to:

Practice coding! Practice coding! Practice coding!

Commonly Asked Questions

  • How do I get JavaScript?
  • Where can I download JavaScript?
  • Is JavaScript Free?

You don't have to get or download JavaScript.

JavaScript is already running in your browser on your computer, on your tablet, and on your smart-phone.

JavaScript is free to use for everyone.

JavaScript Exercises

Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

See all JavaScript Exercises

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JavaScript References

W3Schools maintains a complete JavaScript reference, including all HTML and browser objects.

The reference contains examples for all properties, methods and events, and is continuously updated according to the latest web standards.

Complete JavaScript Reference »

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