Complete React Js Guide: From Fundamentals to Dynamic Apps

Create and run your first React app by scaffolding a project with create-react-app, exploring the src and public folders, understanding JSX and components, and starting a local dev server.

Learn to integrate CSS in a React project by importing app.css and index.css, copying styles, and applying responsive media queries to a task tracker layout in a 12-column, 12-row grid.

Explore how CSS scoping in React keeps component styles private using CSS modules, ensuring isolated, modular styles that don’t bleed into other components and respect the overall app design.

Explore how CSS rules conflict in a React app, comparing global styles with component styles, and learn how specificity and rule order decide which rule wins.

Apply the task tracker container class to a blue centered div in app.js using React className camelcase, then run npm start to render a dynamic task list at localhost 3000.

Build a Reactjs task tracker with a separate input form and a dedicated tasks container, using a single wrapper element and tsx comments for clarity and potential dynamic content.

Learn to componentize UI by turning the task form into a standalone React component, then create a separate task item component with dedicated CSS files to keep the app organized.

Learn to manage task input with React’s useState hook, update input value on change, and add items to a dynamic list by wiring an Add button and console output.

Save new tasks in a state array using use state, pass set task items and task items as props to the task form, and update with the spread operator.

Turn a span into a button in React to toggle the ischecked state with useState. Style using the style attribute to show green when checked, white otherwise, 0.3s transition.

Learn to implement task completion in a React app by adding a completion function, passing it as a prop, and immutably updating state with map and a prev-state callback.

Learn to elevate your React UI by replacing the checkbox and delete button with icons from React Icons, installing the package, importing icons, and toggling icons based on state.

Learn how to preserve data across routes in a React app by isolating re-rendered JSX, extracting the home page into its own component, and passing state through props.

Build an about page with a task tracker and fetch a programming joke from an API using React hooks, including useEffect, useState, error handling, and cleanup.

Master nested routes in React.js by adding an about page with a team subpage, rendering a developers list via an outlet, and using nested routes and links to switch content.

Apply useRef to auto focus the input in the task form on mount, using useEffect to access element via current and initialize state with an empty string to prevent errors.