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JS Tutorial

JS HOMEJS IntroductionJS Where ToJS OutputJS StatementsJS SyntaxJS CommentsJS VariablesJS LetJS ConstJS OperatorsJS ArithmeticJS AssignmentJS PrecedenceJS 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 2019JS 2020JS 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 Exercises


You can test your JavaScript skills with W3Schools' Exercises.


Exercises

We have gathered a variety of JavaScript exercises (with answers) for each JavaScript Chapter.

Try to solve an exercise by editing some code, or show the answer to see what you've done wrong.

Count Your Score

You will get 1 point for each correct answer. Your score and total score will always be displayed.

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If you don't know JavaScript, we suggest that you read our JavaScript Tutorial from scratch.


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