Скачать или смотреть 🚀 10 Must-Know Topics for Beginners to Learn React.js 🌟 || Master React.js

1. Introduction to React.js:
👉 Get familiar with the basic concepts of React.js, its features, and its role in building user interfaces.
👉 React.js is a JavaScript library for building user interfaces.
👉 It is used to create reusable UI components and manage the state of those components.
👉 React.js also uses a virtual DOM to efficiently update the UI when the state of a component changes.

2. JSX:
👉 Learn about JSX, which is a syntax extension for JavaScript used in React.js.
👉 Understand how to write JSX code and how it is transpiled into JavaScript.
👉 JSX allows you to write HTML-like code in your JavaScript files.
👉 It makes it easier to create and manage UI components in React.js.
👉 JSX is transpiled into JavaScript using tools like Babel.

3. Components:
👉 Understand the concept of components in React.js and how they help in building reusable and modular user interface elements.
👉 Components are the building blocks of React.js applications.
👉 They are reusable and modular elements that can be composed to create complex user interfaces.
👉 Components can be either functional or class-based, depending on the use case.

4. State and Props:
👉 Explore how to manage state and pass data to components using props.
👉 Learn about the difference between state and props and how to update them.
👉 State is a JavaScript object that represents the current state of a component.
👉 Props are properties that are passed to a component from its parent component.
👉 They are read-only and cannot be modified within the component.
👉 State can be updated using the setState method.

5. Lifecycle Methods:
👉 Dive into the lifecycle methods in React.js, such as componentDidMount, componentDidUpdate, and componentWillUnmount.
👉 Understand when and how to use them effectively.
👉 Lifecycle methods are methods that are called at different stages of a component's lifecycle.
👉 They allow you to perform certain actions when the component is created, updated, or destroyed.

6. Handling Events:
👉 Learn how to handle events in React.js, such as button clicks or form submissions.
👉 Understand event binding and event handling techniques.
👉 Events in React.js are similar to events in HTML.
👉 You can handle events using event handlers, which are functions that are called when an event occurs.
👉 Event handlers can be bound using the this keyword or by using arrow functions.

7. Conditional Rendering:
👉 Explore how to conditionally render components based on different conditions or states.
👉 Learn about conditional operators and rendering techniques.
👉 Conditional rendering is a technique used to render components based on certain conditions. 👉 You can use conditional operators like if/else statements or the ternary operator to conditionally render components.

8. Lists and Keys:
👉 Understand how to render lists of elements efficiently in React.js.
👉 Learn about the importance of keys and how they help in optimizing rendering performance.
👉 Lists in React.js are rendered using the map() method.
👉 Each item in the list must have a unique key, which helps React.js optimize rendering performance.

9. Forms and Form Validation:
👉 Learn how to work with forms in React.js and implement form validation using built-in or third-party libraries.
👉 Forms in React.js are similar to forms in HTML.
👉 You can use controlled components to manage form data and implement form validation using built-in or third-party libraries like Formik or Yup.

10. React Router:
👉 Get introduced to React Router, a popular library for implementing client-side routing in React.js applications.
👉 Learn how to set up routes, handle navigation, and pass parameters.
👉 React Router allows you to define routes in your application and handle navigation between different components.
👉 You can also pass parameters to routes using query strings or URL parameters.


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