2021 React Crash Course: Complete Beginner's Guide to React

📚React is a JavaScript library/framework for building user interfaces, commonly used for front-end development.

🔨React allows you to structure the view layer of your application using reusable components.

⚛️React uses a virtual DOM to efficiently update parts of a page without reloading, making it fast and interactive.

⏱️React can be used in combination with other technologies to create full stack applications, such as the MERN stack (MongoDB, Express, React, Node.js).

🔧React provides an ecosystem of packages that make it function as a full-fledged framework, offering performance and testing benefits.

What is the difference between React library and framework?

—React is often referred to as a framework, although it is technically a library. It provides an entire ecosystem of packages to create full-fledged applications.

What should I know before learning React?

—Having a good understanding of JavaScript fundamentals, including data types, variables, functions, and asynchronous code, is essential for learning React. Familiarity with fetch API and array methods is also recommended.

Can React be used for full stack development?

—Yes, React can be used for front-end development, and with the help of other technologies like Node.js, MongoDB, and Express, it can be used to create full stack applications.

What are the advantages of using React?

—React provides a way to structure the view layer of your application, making it easier to manage and reuse components. It also offers performance benefits with its virtual DOM and has a large and active community.

Is React still popular in 2021?

—Yes, React is still one of the most popular front-end frameworks in 2021, widely used by developers and sought after by employers.

00:00[Music] Welcome to the 2021 React Crash Course, a complete beginner's guide to React. This course is meant for beginners and covers the core concepts and fundamentals of React.

04:56React is a JavaScript library/framework for building user interfaces. It allows you to structure the view layer of your application using reusable components.

10:08Components in React can be created with both classes and functions. Function components, which are often used with React hooks, are more commonly used nowadays.

13:20State is an object in React that determines how a component renders and behaves. It can hold data like a list of users or tasks.

20:00React uses a virtual DOM to efficiently update parts of a page without reloading, making it fast and interactive.

27:20React can be used in combination with other technologies to create full stack applications. Examples include the MERN stack (MongoDB, Express, React, Node.js) and combining React with PHP or Python.

32:15React provides an ecosystem of packages that make it function as a full-fledged framework. These packages offer performance benefits, testing capabilities, and more.

35:00Before learning React, it's important to have a good understanding of JavaScript fundamentals, including data types, variables, functions, and asynchronous code. Familiarity with fetch API and array methods is also recommended.