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Redux workshop _ PPT

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Introduction to redux<br>

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Redux workshop _ PPT

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  1. 25/06/2025,06:34 Reduxworkshop|PPT Search • UploadDownloadfreefor30days • Reduxworkshop • Apr25,2019•Downloadaspptx,pdf • 0likes•906views • AI-enhanceddescription M Saved IImran Follow Reduxisastatemanagement toolforJavaScriptapplications… Readmore https://www.slideshare.net/slideshow/redux-workshop/142088817

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  7. 25/06/2025,06:34 Reduxworkshop|PPT https://www.slideshare.net/slideshow/redux-workshop/142088817

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  18. 25/06/2025,06:34 Reduxworkshop|PPT SysInfoTools 1slide•20views Microsoft-365-Administrator-s-Guide1.pdf PDF mazharatknl 83slides•17views DigitalTransformation:Automating thePlacementofMedical Interns PDF SafeSoftware 19slides•12views BestPracticeforLLMServingintheCloud PDF Alluxio,Inc. 7slides•104views HumansvsAICallAgents-Qcall.ai'sSpecialReport PDF UditGoenka 16slides•9views HYBRIDIZATIONOFALKANESANDALKENES... PPTX karishmaduhijod1 17slides•29views Reduxworkshop • IntroductiontoRedux • Redux2●Reduxisastatemanagementtoolforjavascriptapps.●Allowsyoutosharethestatebetween components • Redux3StoreReducersActionsState●ItintegratesnicelywithReact. Canuseitwithanyotherviewlibrary.It allowustotrackchanging data.●It’sprettysimilartocomponentstate • Whyuseredux?●Whenwe havebigcomplicateddataforcomplexapplications.●Anycomponentcanpullany pieceofdatafromthereduxstore.Sodataneedstobesharedbetweenmultiplecomponents●Helpsyouwrite applicationsthatbehaveconsistently.●Runindifferentenvironments(client,server, andnative),and are easytotest • Providesagreatdeveloper experience,suchaslivecodeeditingcombinedwithatimetravelingdebugger.●Reusing https://www.slideshare.net/slideshow/redux-workshop/142088817

  19. 25/06/2025,06:34 Reduxworkshop|PPT thecomponentsbecausetheynolongeraredependenttogetthepropsfromtheirparents,theycanallgettheirstate valuesasprops,fromasinglereduxstore4 ActionsReducersStoreState5Triggersanaction Create &DispatchanActionUpdatesstorewithnewstatebased onactiontypeDefines Actions&ActionCreators●Actionsarekindofevents.Andtheyarejustobjects.●Actionslooklikethis:●Instead ofwritingthemourselves we canwraptheminsideafunctionthatreturnsthisactionobject.Andthisfunctionis calledActionCreators.Soactioncreators createactions.6 ActionCreators●Actioncreators(functionsthatreturnaction object )makeyourjobeasierwhenyouneedto dispatchthesameactionatmultipleplaces●Oneactioncantriggermultipleside-effects,dependingonhowmany reducersconsumethataction,bycheckingaction.typeandreturninganewstate ●Inthebelowexampleaction creatorsdispatchesasynchronousaction.Ifyouwanttodispatchasynchronousactions,youneedtousereduxthunk 7 Middlewares●Amiddlewareissomecodeyoucanputbetweentheframeworkreceivingarequest,andthe frameworkgeneratingaresponse●PeopleuseReduxmiddlewareforlogging,crashreporting,talkingtoan asynchronousAPI,routing,andmore.Examples redux-thunk,redux-loggeretc.8 ReduxThunk●Reduxthunkisamiddleware,thatlooksateveryactionthatpassesthroughthesystemandif itsa functionit calls that function. 9 ReduxThunk●WithaplainbasicRedux store, youcanonlydosimplesynchronousupdatesbydispatchingan action.●Middlewareextendthestore'sabilities,and letyou write asynclogicthatinteractswiththe store.●Sowith redux-thunkyoucanhandleasynchronousactions, rather thansynchronousactions.10 Synchronous Actions 11 AsynchronousActions(withthunk)12 ReduxLogger●DisplayprevState,nextStateandactionintheconsoleLog,everytimeanactionisfired.●npmi-D redux-logger13 Reducers●Reducerstakeaninitial State,create anew statebasedontheaction.typeandtheupdatetheredux storewiththenew state. ●Itmustreturnanewstate14 ReduxStore●Storeprovidesauniversaldatastorage.●You can createreduxstoreusing createStore().Wemust passreducerasitsfirstparameter.Ittakesanoptionalsecond parameteras‘intialState’andanoptional‘middleware’ whichallowsustopassmultiplemiddlewareslike‘thunk’,‘redux-logger’etc.15 ReduxStore●WecanthenwrapourmaincomponentinsideProviderandpassourreduxstoreintoit,soany componentcanaccessredux store.●AnycomponentinsideProvidercanalsodispatchanaction.16 Connect●Connectisahigherordercomponent,thatcantakeuptofourparameters.Allareoptional. https://react-redux.js.org/api/connect#connect-parametersconnect(mapStateToProps?,mapDispatchToProps?)● mapStateToProps:isafunctionthatgivesyouthestorevaluesaspropsforyourcomponent.Ittakesstore’s stateas paramandreturnsanobjectwhichgetsaddedaspropsforyourcomponent.17 Connect●mapDispatchToProps:canbeafunction(thatreturnsan object )oranobject.Ifthisparameterisnot passed,thenyourcomponentwill receive‘dispatch’ bydefault. ●Eachpropertyofthereturned objectshouldbea function,thatdispatchesanaction●PassingmapDispatchToPropsasafunction●PassingmapDisptachToPropsas Object:HerefetchPostsisaactionCreator(function)thatwehaveimported,thatdispatchesanaction.18 Connect●The returnofconnect()isawrapperfunctionthattakesyourcomponentandreturnsawrapper componentwiththeadditionalpropsthatitinjects. ●Howeveritdoesnotchangeyourcomponent,itjustreturnsa newcomponentwithpropsinjectedinit.●https://react-redux.js.org/api/connect#connect-returns19 When touseConnect?●Therecanbetwotypesofcomponents:1.SmartComponent2.DumbComponent● SmartComponentsaretheoneswhichuseconnect(),takethestoredataaspropsusethemforthemselvesandthen canpassittoDumbComponentsdowninthe tree.●Youshouldavoidpassingpropstomultiplelevelchild Componentsasitwouldalsomakethemhardto test.20 ActionsReducersStoreState21TriggersanactionDispatchAction (type&payload )Updatesstorewithnewstate basedonactiontypeAction:(type&payload)prevState&ActionDefines https://www.slideshare.net/slideshow/redux-workshop/142088817

  20. 25/06/2025,06:34 Reduxworkshop|PPT 22TriggersanactionDispatchAction (type&payload )UpdatesstorewithnewstatebasedonactiontypeAction: (type&payload)prevState&ActionDefines Steps23●Createareducerandreturnstatebasedonactiontype( optional:combinereducer )●Create(return) anactionusingactioncreator●Createastoreandpassthereducer ( optional:addmiddleware ) ●Calltheaction creator usingstore.dispatch(actionCreator())(Ifnotreact)AdditionalstepsForReact,●Wrapyourcomponentinside Providerandpassstore●ConnectyourReact withredux:connect(mapStateToProps)(Compo)●CallactionCreator usingthis.props.dispatch(actionCreator) DifferencebetweenComponentstate&Store stateComponentState =Acomponentstate canbechanged=State ismanagedwithinacomponentandcanonlybepassedaspropswithatoptobottomdataflow-Statevaluecan change,andthenrenderfunctioniscalled..ReduxStore state -Areduxstore state isimmutable.Soreducersnever changesthestatebut create anewstateeachtimeandupdatesthestore-Anycomponentcanaccessit=Reducer updatesthestorewithanewstatewhenanactionisdispatched.24 25 Thanks!Anyquestions?@imranhsayed@imran_.sayed Download CookiePreferences AboutSupportTermsPrivacy Donotsellorsharemypersonalinformation Copyright English ©2025SlideSharefromScribd https://www.slideshare.net/slideshow/redux-workshop/142088817

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