Tutoriels JavaScript

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width:350px; }SkiptocontentHomeES6AdvancedJaScriptArrayMethodsJaScriptStringMethodsRegularExpressionsESNextJSBOMJSDOMWebAPIReactReactNativeNode.jsTypeScripttry{fetch(newRequest("pead2.googlesyndication.com/pead/js/adsbygoogle.js",{method:'HEAD',mode:'no-cors'})).then(function(response){returntrue;}).catch(function(e){varcarbonScript=document.createElement("script");carbonScript.src="//cdn.carbonads.com/carbon.js?serve=CE7IC2QE&placement=";carbonScript.id="_carbonads_js";document.getElementById("carbon-block").appendChild(carbonScript);});}catch(error){console.log(error);}JaScriptTutorialWelcometotheJaScriptTutorial.netwebsite!ThisJaScriptTutorialhelpsyoulearntheJaScriptprogramminglanguefromscratchquicklyandeffectively.Ifyoufindyourselfinanyofthefollowingsituations:UnsureaboutwheretostartlearningJaScript.TiredofsimplycopyingandpastingJaScriptcodewithoutreallyunderstandinghowitworks.Feelstucktoaddricherandmorecompellingfeaturestoyourwebsitesandwebapplicationsbecauseyoudon8217;tknowhowtogetmuchoutofJaScript.JaScriptTutorial.netisagoodplacetostart.Section1.GettingstartedWhatisJaScript?8211;introduceyoutoJaScriptanditshistory.InstallaJaScriptsourcecodeeditor8211;learnhowtoinstalltheVisualStudioCodeforeditingJaScriptcode.MeettheConsoleTabofWebDevelopmentTools8211;provideyouwithabasicintroductiontotheConsolewindowonthewebbrowsers.JaScriptHelloWorld8211;learnhowtoexecutethefirstJaScriptcodethatdisplaysthefamous"Hello,World!"messe.Section2.FundamentalsSyntax8211;explaintheJaScriptsyntax,includingwhitespace,statements,identifiers,keywords,expressions,andcomments.Variables8211;showyouhowtodeclarevariables.Datatypes8211;introducetoyoutheJaScriptdatatypes,includingprimitiveandreferencetypes.Number8211;learnhowJaScriptusestheNumbertypetorepresenttheintegerandfloating-pointnumbers.NumericSeparator–showyouhowtomakethenumbersmorereadablebyusingunderscoresasnumericseparators.Octal&binaryliterals8211;providesupportforbinaryliteralsandchangethewaytorepresentoctalliterals.Boolean8211;introduceyoutotheBooleantype.String8211;learnaboutstringprimitivetypeandsomebasicstringoperations.Object8211;introduceyoutotheobjecttype.Primitivevs.referencevalues8211;understandtwovaluetypesinJaScript,includingprimitiveandreferencevalues,andthedifferencesbetweenthem.Array8211;introduceyoutotheArraytypeandhowtomanipulatearrayelements.Section3.OperatorsArithmeticoperators8211;introducetoyouthearithmeticoperatorsincludingaddition(+),subtraction(-),multiplication(*),anddivision(/).Remainderoperator8211;showyouhowtousetheremainderoperator(%)togettheremainderleftoverwhenonevalueisdividedbyanothervalue.AssigTutoriels JavaScriptnmentoperators8211;guideyouonhowtouseassignmentoperators(=)toassignavalueoranexpressiontoavariable.Unaryoperators8211;learnhowtouseunaryoperators.Comparisonoperators8211;showyouhowtousecomparisonoperatorstocomparetwovalues.Logicaloperators8211;learnhowtousethelogicaloperators:NOT(!),AND(&&),andOR(||).Section4.ControlflowStatementsif8211;showyouhowtousetheifstatementtoexecuteablockifaconditionistrue.if8230;else8211;learnhowtoexecuteablockofcodebasedonaspecifiedcondition.if8230;else8230;if8211;checkmultipleconditionsandexecuteablock.Ternaryoperators8211;showyouhowtomakeashortcutfortheifstatement(?:).switch8211;showyouhowtoreplacemultipleifstatementswhencomparingavaluewithmultiplevariantsbyusingtheswitchstatement.while8211;learnhowtoperformapre-testloopthatrepeatedlyexecutesablockofcodeaslongasaspecifiedconditionistrue.do8230;while8211;showyouhowtocarryapost-testloopthatexecutesablockofcoderepeatedlyuntilaspecifiedconditionisfalse.forloop8211;learnhowtorepeatedlyexecuteablockofcodebasedonvariousoptions.break8211;learnhowtoprematurelyterminatealoop.continue8211;showyouhowtoskipthecurrentiterationofaloopandjumptothenextone.Commaoperator8211;guideyouonhowtousethecommaoperatorinaforlooptoupdatemultiplevariablesatonce.Section5.FunctionsFunctions8211;introduceyoutofunctionsinJaScript.Functionsarefirst-classcitizens8211;learnhowtostorefunctionsinthevariables,passfunctionsintootherfunctionsasarguments,andreturnfunctionsasvalues.AnonymousFunctions8211;learnaboutanonymousfunctionswhicharethefunctionswithoutnames.Pass-by-value8211;understandhowpass-by-valueworksinJaScript.Recursivefunction8211;learnhowtodefinerecursivefunctions.DefaultParameters8211;showyouhowtodefinedefaultparametersforfunctions.Section6.Objects&PrototypesObjectMethods8211;introduceyoutothemethodsofanobject.Constructorfunctions8211;showyouhowtouseconstructorfunctionstodefinecustomtypesinJaScript.Prototype8211;learnhowtheprototypeworksinJaScript.Constructor/Prototypepattern8211;showyouhowtocombinetheconstructorfunctionandprototypepatterntodefinecustomtypes.Prototypalinheritance8211;understandprototypalinheritanceinJaScript.WhatisthisinJaScript8211;understandthethisvalueandhowitworksinJaScript.globalThis–provideastandardwaytoaccesstheglobalobjectacrossenvironments.ObjectProperties8211;diveintotheobject8217;spropertiesandtheirattributes.for8230;inloop8211;learnhowtoiterateoverpropertiesofanobjectusingthefor...inloop.EnumerableProperties8211;learnmoreabouttheenumerableproperties.OwnProperties8211;understandtheownandinheritedproperties.Factoryfunctions8211;learnaboutthefactoryfunctionswhicharefunctionsthatreturnobjects.ObjectDestructuring8211;learnhowtoassignpropertiesofanobjecttovariables.Optionalchainingoperator(?.)–simplifythewaytoaccessapropertylocateddeepwithinachainofconnectedobjectswithouthingtocheckifeachreferenceinthechainisnullorundefined.Objectliteralsyntaxextensions8211;provideanewwaytodefineobjectliteral.Section7.ClassesClass8211;introduceyoutotheES6classsyntaxandhowtodeclareaclass.GettersandSetters8211;definethegettersandsettersforaclassusingthegetandsetkeywords.ClassExpression8211;learnanalternativewaytodefineanewclassusingaclassexpression.Computedproperty8211;explainthecomputedpropertyanditspracticalapplication.Inheritance8211;showyouhowtoextendaclassusingtheextendsandsuperkeywords.new.target8211;introduceyoutothenew.targetmetaproperty.Staticmethods8211;guideyouonhowtodefinemethodsassociatedwithaclass,notinstancesofthatclass.StaticProperties8211;showyouhowtodefinestaticpropertiessharedbyallinstancesofaclass.PrivateFields–learnhowtodefineprivatefieldsinaclass.PrivateMethods–showyouhowtodefineprivatemethodsinaclass.Section8.AdvancedFunctionsFunctiontype8211;introduceyoutotheFunctiontypeanditspropertiesandmethods.call()8211;understandthecall()methodandlearnhowtouseiteffectively.apply()8211;learnhowtousetheapply()methodeffectively.bind()8211;understandthebind()methodandhowtoapplyiteffectively.Closure8211;understandtheclosuresinJaScript.ImmediatelyInvokedFunctionExpression(IIFE)8211;learnaboutimmediatelyinvokedfunctionexpressions(IIFE).Returningmultiplevalues8211;guideyouonhowtoreturnmultiplevaluesfromafunction.Arrowfunctions8211;introduceyoutothearrowfunctions(=>)Arrowfunctions:whenyoushouldnotuse8211;learnwhennottousearrowfunctions.Restparameter8211;introduceyoutotherestparametersandhowtousethemeffectively.Callbackfunctions8211;introduceyoutothecallbackfunctionsandlearnhowtousethecallbackstohandleasynchronousoperations.Section9.Promises&Async/AwaitPromises8211;learnaboutJascriptPromises,whattheyare,andhowtousethemeffectively.Promisechaining8211;showyouhowtoexecutemultipleasynchronousoperationsinsequence.Promisecomposition:Promise.all()&Promise.race()8211;learnhowtocomposeanewpromiseoutofseveralpromises.Promise.any()–learnhowtousetheJaScriptPromise.any()methodtoreturnthefirstPromisethatfulfills.Promise.allSettled()–acceptalistofpromisesandreturnsanewpromisethatresolvestoanarrayofvalues,whichweresettled(eitherresolvedorrejected)bytheinputpromises.Promise.prototype.finally()–executeapieceofcodewhenthepromiseissettled,regardlessofitsoutcome.Promiseerrorhandling8211;guideyouonhowtohandleerrorsinpromises.async/await–writeasynchronouscodeinaclearersyntax.Promise.withResolvers()8211;returnanewPromisewithresolveandrejectfunctions.Section10.Iterators&GeneratorsIterators8211;introduceyoutotheiterationanditeratorprotocols.Generators8211;developfunctionsthatcanpausemidwayandthencontinuefromwheretheypaused.yield8211;diveintohowtousetheyieldkeywordingenerators.for8230;of8211;learnhowtousethefor...oflooptoiterateoverelementsofaniterableobject.Asynchronousiterators–learnhowtouseasynchronousiteratorstoaccessasynchronousdatasourcessequentially.Asyncgenerators–showyouhowtocreateanasyncgenerator.Section11.ModulesModules8211;learnhowtowritemodularJaScriptcode.Export8211;explainindetailhowtoexportvariables,functions,andclassesfromamodule.Import8211;guideyouonhowtoimportdefaultexportsandnamedexportsfromanothermodule.Dynamicimport–showyouhowtoimportamoduledynamicallyviathefunction-likeobjectimport().Top-levelawait–explainthetop-levelawaitmoduleanditsusecases.Section12.SymbolSymbol8211;introduceyoutoanewprimitivetypecalledsymbolinES6Section13.CollectionsMap8211;introduceyoutotheMaptypethatholdsacollectionofkey-valuepairs.Set8211;learnhowtousetheSettypethatholdsacollectionofuniquevalues.Section14.Errorhandlingtry8230;catch8211;showyouhowtohandleexceptionsgracefully.try8230;catch8230;finally8211;learnhowtocatchexceptionsandexecuteablockwhethertheexceptionsoccurornot.throw8211;showyouhowtothrowanexception.Optionalcatchbinding–omittheexceptionvariableinthecatchblock.Section15.JaScriptvar,let,andconstlet8211;declareblock-scopedvariablesusingtheletkeyword.letvs.var8211;understandthedifferencesbetweenletandvar.const8211;defineconstantsusingtheconstkeyword.Section16.Proxy&ReflectionProxy8211;learnhowtousetheproxyobjectthatwrapsanotherobject(target)andinterceptsthefundamentaloperationsofthetargetobject.Reflection8211;showyouhowtouseES6ReflectionAPItomanipulatevariables,properties,andmethodsofobjectsatruntime.Section17.JaScriptRuntimeExecutionContexts8211;understandexecutioncontextsincludingglobalandfunctionexecutioncontexts.CallStack8211;understandthecallstack.EventLoop8211;showyouhowJaScripthandlesasynchronousoperationsusingtheeventloop.Hoisting8211;learnhowhoistingworksinJaScript.Variablescopes8211;introduceyoutothevariablescopes.Section18.PrimitiveWrapperTypesPrimitivewrappertypes8211;learnhowprimitivewrappertypesworkinJaScript.Boolean8211;introduceyoutotheBooleanprimitivewrappertype.Number8211;learnabouttheNumberprimitivewrappertype.BigInt–introducetheBigInttypethatrepresentsthebigintegers.Stringtype8211;introduceyoutotheStringtype.Section19.AdvancedOperatorsLogicalassignmentoperators–introducetoyouthelogicalassignmentoperators,including||=,&&=,and??=Nullishcoalescingoperator(??)–accepttwovaluesandreturnthesecondvalueifthefirstoneisnullorundefined.Exponentiationoperator8211;introduceyoutotheexponentiationoperator(**)thatcalculatesabasetotheexponentpower,whichissimilartoMath.pow()method.Searchfor:GettingStartedWhatisJaScriptInstallaJaScriptCodeEditorMeettheConsoleTabofDevtoolsJaScriptHelloWorldJaScriptFundamentalsSyntaxVariablesDataTypesNumberNumericSeparatorBooleanStringObjectPrimitivevs.ReferenceValuesArrayJaScriptOperatorsArithmeticOperatorsRemainderOperatorAssignmentOperatorsUnaryOperatorsComparisonOperatorsLogicalOperatorsControlFlowififelseifelseifTernaryOperator(:?)switchcasewhiledowhileforbreakcontinueCommaOperatorJaScriptFunctionsFunctionsFunctionsareFirst-ClassCitizensAnonymousFunctionsUnderstandingPass-By-ValueinJaScriptRecursiveFunctionsDefaultParametersJaScriptObjectsObjectMethodsConstructorFunctionsPrototypeConstructor/PrototypePatternPrototypalInheritanceJaScriptthisglobalThisObjectPropertiesfor…inLoopEnumerablePropertiesOwnPropertiesFactoryFunctionsObjectDestructuringOptionalChainingOperatorObjectLiteralSyntaxExtensionsClassesClassGetters038;SettersClassExpressionsComputedPropertiesInheritancenew.targetStaticMethodsStaticPropertiesPrivateFieldsPrivateMethodsinstanceofOperatorAdvancedFunctionsFunctionTypeThecall()MethodTheapply()methodThebind()MethodClosuresImmediatelyInvokedFunctionExpression(IIFE)ReturningMultipleValuesArrowFunctionsArrowFunctions:Do038;Don8217;tRestParametersCallbackPromises038;Async/AwaitPromisesPromiseChainingPromise.all()Promise.race()Promise.any()Promise.allSettled()Promise.prototype.finally()PromiseErrorHandlingasync/awaitPromise.withResolvers()JaScriptModulesModulesDynamicImportTop-levelAwaitModulesJascriptErrorHandlingtry…catchtry…catch…finallyThrowanExceptionOptionalcatchBindingJaScriptRuntimeExecutionContextCallStackEventLoopHoistingVariableScopesPrimitiveWrapperTypesPrimitiveWrapperTypesBooleanNumberBigIntStringMoreJaScriptOperatorsFalsyNullishCoalescingOperatorLogicalAssignmentOperatorsExponentiationOperatorAboutJaScriptTutorialTheJaScriptTutorialwebsitehelpsyoulearnJaScriptprogrammingfromscratchquicklyandeffectively.ReferencesArrayMethodsStringMethodsRegularExpressionsJaScriptSnippetsSiteLinksDonation❤️AboutContactPrivacyPolicy©2009-PresentbyJaScriptTutorialWebsite.AllRightReserved.