Introduction to React - Blockchain UNN.pdf

Introduction to React - Blockchain UNN.pdf

• 1.
  IntroductiontoReact byFranklinOhaegbulam BlockchainUNNBootcamp REACTBASICS
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  Agenda 1. OverviewofReactanditsbenefits 2. Component-basedarchitecture 3.SettingUpaReactapp 4. JSXandRenderingElements 5. Components-FunctionalvsClass
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  React is ajavascript library for building user interfaces for websites and web applications. Efficiency: The virtual DOM improves app performance by minimizing direct manipulation of the actual DOM Maintainability: The component-based architecture leads to cleaner code that's easier to maintain and scale Flexibility: Developers can integrate React with other libraries or frameworks easily, allowing for customized solutions Strong Tooling Support: Tools like Create React App and Vite simplify project setup, while developer tools enhance debugging capabilities. WHAT IS REACT? FEATURES OF REACT
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  Component-BasedArchitecture:ReactpromotesbuildingUIusingreusablecomponents.Eachcomponent encapsulatesitslogic,rendering,andstyling,makingthecodebaseeasiertomanage VirtualDOM:ReactusesavirtualrepresentationoftheDOMtooptimizerendering.Whenthestateofan objectchanges,ReactupdatesonlythenecessarypartsoftheactualDOM,improvingperformanceand enhancingUX DeclarativeSyntax:ReactallowsdeveloperstodescribehowtheUIshouldlookforanygivenstate,makingit easiertounderstandandpredicthowtheapplicationbehaves UnidirectionalDataFlow:DatainReactflowsinonedirection(fromparenttochildcomponents).Thismakes iteasiertotrackchangesanddebugissuesthroughthecomponenthierarchy JSX:JSXisasyntaxextensionthatallowsdeveloperstowriteHTML-likecodewithinJavaScript.Thismakesit easiertovisualizetheUIstructureandenhancesreadability RichEcosystem:Reacthasavastecosystemoflibrariesandtools,includingstatemanagementsolutions (likeRedux),routinglibraries(ReactRouter),andtestingutilities(Jest). StrongCommunitySupport:Reacthasalargecommunityofdeveloperswhocontributetoitsgrowth.This meansextensivedocumentation,tutorials,andthird-partyresourcesarereadilyavailable PerformanceOptimization:Featureslikelazyloadingcomponentsandhooks likeuseMemoanduseCallbackhelpoptimizeperformancebyreducingunnecessaryre-renders. WhyUseReact?
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  What is JSXand Rendering Embedding expressions and attributes JSX(JavaScript XML) allows developers to write HTML-like syntax within JavaScript which defines UI components in a clear and concise manner, making the code easier to understand. Rendering in React refers to the process of displaying the UI based on the component's state and props. When a component's state or props change, React re-renders that component, updating the DOM efficiently using its virtual DOM mechanism. You can embed any JavaScript expression by wrapping it in curly braces { You can assign values to attributes using curly braces, enabling dynamic rendering based on state or props. Prerequisites: Node.js and package manager (npm, yarn) Creating a React app (Vite, create-react-app)
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  Photocredit:RohanKamath UnderstandingAtomicDesign
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  Stateandlifecyclemethodsinclass components ReactComponents Propsinfunctionalcomponents
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  Class Component vsFunction Component
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  Thank You!!! @frankiefab100 www.frankiefab.com