React Hooks Tutorial - Master React Hooks Development

Preview a React hooks project by building a home-page app with a search bar, jokes, tasks, a gallery, and hacker news while learning use state, use effect, and custom hooks.

Set up your first React project by creating a dedicated directory and bootstrapping with create react app via npcs, then clean up starter files for a lean local setup.

Master useState in function components to manage state. Build a Google search bar with an input tied to user query, updating state on change and triggering a search with window.open.

Explore the useEffect hook for after render side effects, fetching a joke from official Joke API. Store the joke with useState and use an empty dependency array to prevent loops.

Discover how to build a custom hook useFetch that encapsulates fetch with useState and useEffect, accepts a URL and initial value, and enables reuse across joke and stories components.

Explore how hooks work under the hood and how the React engine enables use state and use effect within components, while tying up loose ends from the last section.

Explore how React runs as a runtime that renders a DOM tree, handles reconciliation, and uses hooks like useState and useEffect to augment function components.

Investigate how the useState hook drives a live search input, revealing asynchronous state updates, closures, and rerenders as React processes onChange handlers and component updates.

Learn to build a React tasks component using multiple useState hooks, managing task text, task list, and completed items with unique ids via uuid.

Learn to build a React task tracker that moves tasks from a live list to a completed list using a complete task helper, delete actions, and three useState hooks.

Explore how useState hooks depend on call order, not variable names, to map state in a component. The lecture reveals behavior by toggling hook order and emphasizes consistent call order.

Learn to persist tasks and completed tasks in local storage by creating store and read helper methods, using useEffect to save after each render, and initialize state safely with defaults.

Explore building a gallery with interval-based image transitions using useEffect and useState. Learn to use a functional state updater to prevent stale closures and loop through pictures.

Learn to build a dynamic gallery with React hooks by making delay and increment controllable, enforce a minimum delay and minimum increment, update the interval via useEffect, and ensure cleanup.

Engage in an optional coding challenge to build a matrix component animated with a useEffect interval. Enable dynamic delay and increment, and extract a reusable hook for the interval logic.

Build a custom hook, useDynamicTransition, to manage an index with a dynamic delay and length for gallery and matrix components, enabling centralized logic and configurable transitions.

Understand why hooks reframe components as a concept that combines state and side effects, and how use state and use effect enable React function components within the runtime.

Explore the reducer pattern by organizing state into a global store, describing sections with reducers and actions, and using the useReducer hook to dispatch actions in an unidirectional data flow.

Master managing messages with a reducer in a React hooks app, using actions and action creators, a centralized useReducer state, and testing with dispatch and useEffect.

Demonstrates using the use reducer hook to centralize tasks and completed tasks, define a task reducer with initial state, and dispatch actions to update state as tasks are added.

Create a publish message component that uses useState to track input, dispatches a new message action on button click or enter key, and receives dispatch via props.

Create a message board component that reads messages from the reducer state and displays id, text, and a formatted timestamp, then pass state messages via props and integrate with app.js.

Learn how to share state and dispatch across many components with use context, create a provider, and build a custom hook to simplify access; explore pub-sub messaging across users.

Explore the pub-sub architecture with pubnub by publishing and subscribing to a message channel. Implement configuration, listeners, and a reusable pubsub flow to enable real-time messaging across multiple users.

Learn to build a pub sub function using the function keyword, connect pub sub with a reducer via an add listener and use effect, and publish actions across multiple clients.

Learn to implement a global username for messages using a reducer and context hooks, including a set username component and publishing messages with the author, initially anonymous.

Create a reaction component that renders emoji buttons from a centralized reaction objects array, exporting four emojis (including heart) to attach reactions to messages, with reducer and pub-sub flow forthcoming.

Master react hooks by implementing reaction objects: create a reaction action creator with a dynamic type and message id, and update reducer to maintain reactions map keyed by message id.

Publish reactions with a pub sub system by creating a reaction action that includes type, emoji, username, and message id, triggered on emoji clicks.

Create a message reactions component that maps reactions to display each username and emoji, guards against undefined data, and adds commas between pairs using React hooks like useReducer and useContext.

Explore React fundamentals, including client versus server components and the differences between client-side and server-side rendering, with Next.js pre rendered at build time.

Build an instagram-style grid in a Next.js app by loading grid data from Data.js, mapping items to linked tiles with background images, and creating routes for about and discography pages.

Learn to style React apps using Tailwind CSS with utility-first classes, grids, hover effects, and responsive layouts. The lecture covers Tailwind docs, IntelliSense, and production optimization for lean CSS.

Learn Next.js fonts and responsive design by importing Google fonts Ranga and Roboto Condensed, wiring them with Tailwind, and applying lg-based responsive layouts for mobile to desktop.

Learn how to set up and style a dynamic connect page in Next.js using client and server components, tailwind, and shared CSS to display follower progress and email subscriptions.

Explore Next.js client components and the client‑versus‑server distinction for optimizing Next.js and React apps. See a Spotify follower example that uses a wrapper API to fetch and display followers.

Learn to build an email list subscription using the Mailjet API with a Next.js server action, and manage API keys and the post contact flow securely.

Explore React 18 useTransition to manage a contact form submission with a post contact server action, including client component setup, form validation, and pending state with a spinner.

Learn how to build Next.js record pages using a reusable layout, dynamic segments, and a global loading UI with a spinner component for SEO-friendly metadata.

Implement dynamic routes with Next.js by using a record/[id] dynamic segment and generateStaticParams to predefine id values, then share layout and loading components across pages.

Create dynamic Next.js record pages using generate static params and generate metadata to render date and blurb from a records map, then add a Spotify embed with React suspense.

Explore how to implement Spotify embeds with React lazy and Suspense, using iframes and lazy loaded components to show a loading UI, then handle Next.js 404 redirection for unsupported routes.

Explore how to implement a 404 not-found page with Next.js by using catch-all segments, root groups, and a dedicated NotFound file to take over the UI across valid routes.

Create nested dynamic routes in Next.js by adding a record/[id]/[content] path, generating static params for lyrics and gear, and rendering content pages with a player and breadcrumb navigation.

Build a playlist personality quiz page with Next.js and React 18, creating a multi-question form and using URL parameters to reveal a matching playlist.

Build a responsive discography page using Next.js images with proper alt and sizes, plus playable album art links, and introduce React 18's use deferred value hook for search.

Explore how to use React 18's useDeferredValue and memo to optimize a search feature, balancing immediate input responsiveness with deferred list updates for scalable performance.

Deploy a Next.js app with Vercel by linking your GitHub repository and enabling continuous deployment on new commits, and use Vercel analytics to track visits.

Explore production versus course code in a Next.js and React app, including about, studio, and discography pages, plus features like link title and client log.

Explore JavaScript primitives, variables, and control flow using browser console and Node.js, and learn how const and let, for loops, and equality operators handle type conversions and undefined in conditionals.

Explore core JavaScript concepts, including functions, arrow syntax, parameters, callbacks, and classes, and see how constructors and this enable object oriented programming with class instances.

Explore JavaScript in the browser console, mastering the read-eval-print loop, operators, and variables. Understand assignment and var usage, and see how numbers and strings behave when reassigned.

Explore booleans in JavaScript, learn how true and false drive conditional logic through if, else if, and switch statements, and understand semicolon usage.

Master when to use semicolons in JavaScript by defining statements, covering declaration and control-flow blocks, and learning to write single-line and multi-line comments.

Explore undefined as a primitive value in JavaScript, where a declared but unassigned variable yields undefined, and functions may return undefined or nothing, as seen in the read-eval-print loop.

Explore JavaScript arrays as mutable lists with dynamic length, learn to push elements, access by index, and use splice for insertion and removal, with examples like laptop and 13.

Master loops and iteration with for, while, and do while constructs, using ping and pong logs to illustrate the dry principle and incremental updates.

Master JavaScript functions by comparing declarations and expressions, naming conventions like camel casing, parameters and returns, side effects, and anonymous functions with arrow function basics.

Master arrow functions as a concise alternative to function expressions. Learn the syntax, parameters, anonymous usage, and how to return data with and without the return keyword.

Explain how this behaves differently in arrow functions versus function expressions, and why object methods need a function expression to access this.

Explore how the this keyword resolves in a JavaScript interview question about an object method with a nested function, comparing function expressions to arrow functions and binding this.

Explore callbacks in JavaScript, learn how to pass functions as arguments, invoke them, and use for each with arrays, including arrow function examples for ordering and clarity.

Explore how callbacks in JavaScript power function composition by passing an arrow function to greet and logging the result with a log message.

Discover JavaScript's dynamic typing, primitives, and the type of operator; see why arrays are objects and how push and forEach work.

Understand how equality in JavaScript depends on types and how type coercion occurs. Compare double equals and triple equals, and see strings, numbers, and booleans convert under the hood.

Explore truthy and falsy values in JavaScript, showing which values like strings and objects are truthy and which like zero, empty string, undefined, and null are falsy, with defensive guards.

Explore the difference between null and undefined in JavaScript, representing absence of an object, and contrast their types, equality checks, and explicit type conversion.

Explore explicit type conversion in JavaScript using number, boolean, and string wrappers. See how date wrapper and date.now produce time stamps, and how the array wrapper builds arrays.

Explore JavaScript's dynamic, weakly typed nature, the type of operator, and implicit coercion across strings, numbers, booleans, arrays, and objects.

Explore let and const declarations, mutability concepts, and the difference between primitives and objects. Learn how reassignment works with let, why const cannot be reassigned, and how objects mutate.

Explore the differences between let, const, and var, including redeclaration rules and block vs function scope, and learn how scope and hoisting affect JavaScript behavior.

Explore var hoisting, how it differs from let, and how reference errors occur when using a let before its declaration, while var is hoisted and avoids that error.

Explore scope and hoisting in JavaScript through a step-by-step code analysis, including let versus var behavior and a function scope demonstration that yields green, undefined, blue and red.

Explore property shorthand and destructuring assignment to write concise object code, unpack arrays and nested objects, apply defaults, and skip indices for cleaner JavaScript.

Explore essential object methods in JavaScript, including Object.keys, Object.values, and Object.entries, using a grade map. Learn how Object.assign clones and merges objects, with rightmost source winning on conflicts.

Explore the spread syntax, the three dots, to clone and merge objects and arrays, and to pass array elements as function arguments.

Explore how Object.is handles primitives and references, and how Object.assign and spread create shallow clones. Learn why nested objects share references and that deep cloning requires a separate approach.

Explore how JSON.parse and JSON.stringify enable deep cloning of objects in this React hooks tutorial. Contrast with shallow cloning by spread and Object.assign, and note JSON limitations: no functions.

Explore deep cloning in JavaScript by comparing Object.assign, the spread syntax, and JSON methods; implement a recursive deep clone function and leverage lodash's cloneDeep for robust results.

Explore a JavaScript interview question on cloning an object, comparing Object.assign, spread clone, and Json clone, and explain why deep cloning requires a solution like lodash.

Explore JavaScript closures, their three scopes, and private methods; use sign up and sign in patterns and function factories to manage username and password.

Explore higher order functions in JavaScript, including callbacks and function factories, and see how functions can be passed and returned to enable functional programming patterns.

Explore object oriented programming, a paradigm that models code as real world objects with templates, attributes, and methods. See how instances inherit templates and interact to build programs.

Explore constructor functions in JavaScript to build reusable object templates and instances using this and new, with a guided example of a building object and its info method.

Master JavaScript classes as object templates using the class keyword and constructor, then add methods, getters, and setters to manage state and inheritance.

Explore how prototypes drive prototype-based inheritance in JavaScript, and learn how constructor functions and the prototype object link instances to shared properties and methods, with dynamic updates affecting existing objects.

Explore the object prototype, the __proto__ chain, and how prototypes cascade from string and number to object, revealing constructor relationships and Object.prototype methods.

Explore prototype-based inheritance in JavaScript by building artist and musician constructors, creating Monet, Donatello, and Frank Sinatra, and demonstrating prototype lookup with object.prototype info.

Explore how JavaScript handles asynchronous code with setTimeout, understand non-blocking execution, the timeout ID, and how clearTimeout can cancel a scheduled function, and preview the fetch use case.

Explore the fetch method to make api requests in JavaScript using the Official Joke API to retrieve a json payload. Use promises and then handlers to access response.json.

Explore how the JavaScript engine and runtime execute code, including the stack, heap, queue, and event loop, and how asynchronous patterns like setTimeout and promises behave.

Explore asynchronous JavaScript through a setTimeout interview question, illustrating non-blocking execution, a background queue, zero and one thousand millisecond delays, and how the event loop schedules console logs.