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JS Tutorial

JS HOMEJS IntroductionJS Where ToJS OutputJS StatementsJS SyntaxJS CommentsJS VariablesJS LetJS ConstJS OperatorsJS ArithmeticJS AssignmentJS Data TypesJS FunctionsJS ObjectsJS EventsJS StringsJS String MethodsJS String SearchJS String TemplatesJS NumbersJS Number MethodsJS ArraysJS Array MethodsJS Array SortJS Array IterationJS Array ConstJS DatesJS Date FormatsJS Date Get MethodsJS Date Set MethodsJS MathJS RandomJS BooleansJS ComparisonsJS If ElseJS SwitchJS Loop ForJS Loop For InJS Loop For OfJS Loop WhileJS BreakJS IterablesJS SetsJS MapsJS TypeofJS Type ConversionJS BitwiseJS RegExpJS ErrorsJS ScopeJS HoistingJS Strict ModeJS this KeywordJS Arrow FunctionJS ClassesJS ModulesJS JSONJS DebuggingJS Style GuideJS Best PracticesJS MistakesJS PerformanceJS Reserved Words

JS Versions

JS VersionsJS 2009 (ES5)JS 2015 (ES6)JS 2016JS 2017JS 2018JS IE / EdgeJS History

JS Objects

Object DefinitionsObject PropertiesObject MethodsObject DisplayObject AccessorsObject ConstructorsObject PrototypesObject IterablesObject SetsObject MapsObject Reference

JS Functions

Function DefinitionsFunction ParametersFunction InvocationFunction CallFunction ApplyFunction BindFunction Closures

JS Classes

Class IntroClass InheritanceClass Static

JS Async

JS CallbacksJS AsynchronousJS PromisesJS Async/Await

JS HTML DOM

DOM IntroDOM MethodsDOM DocumentDOM ElementsDOM HTMLDOM FormsDOM CSSDOM AnimationsDOM EventsDOM Event ListenerDOM NavigationDOM NodesDOM CollectionsDOM Node Lists

JS Browser BOM

JS WindowJS ScreenJS LocationJS HistoryJS NavigatorJS Popup AlertJS TimingJS Cookies

JS Web APIs

Web API IntroWeb Forms APIWeb History APIWeb Storage APIWeb Worker APIWeb Fetch APIWeb Geolocation API

JS AJAX

AJAX IntroAJAX XMLHttpAJAX RequestAJAX ResponseAJAX XML FileAJAX PHPAJAX ASPAJAX DatabaseAJAX ApplicationsAJAX Examples

JS JSON

JSON IntroJSON SyntaxJSON vs XMLJSON Data TypesJSON ParseJSON StringifyJSON ObjectsJSON ArraysJSON ServerJSON PHPJSON HTMLJSON JSONP

JS vs jQuery

jQuery SelectorsjQuery HTMLjQuery CSSjQuery DOM

JS Graphics

JS GraphicsJS CanvasJS PlotlyJS Chart.jsJS Google ChartJS D3.js

JS Examples

JS ExamplesJS HTML DOMJS HTML InputJS HTML ObjectsJS HTML EventsJS BrowserJS EditorJS ExercisesJS QuizJS Certificate

JS References

JavaScript ObjectsHTML DOM Objects


JavaScript Tutorial

JavaScript is the world's most popular programming language.

JavaScript is the programming language of the Web.

JavaScript is easy to learn.

This tutorial will teach you JavaScript from basic to advanced.

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

This tutorial covers every version of JavaScript:

  • The Original JavaScript ES1 ES2 ES3 (1997-1999)
  • The First Main Revision ES5 (2009)
  • The Second Revision ES6 (2015)
  • The Yearly Additions (2016, 2017, 2018)


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. Practice. Practice. Code. Code. Code !



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.


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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 »

JavaScript Quiz Test

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