React JS

React is the most popular javascript library for building user interfaces. It is fast, flexible and it also has a strong community sitting online to help you every time. The coolest thing about React is its based on components, you break down your complex code into individual pieces i.e components and that helps developers in organizing their code in a better way. A lot of companies are moving to React and thats the reason most of the beginners and experienced developers also expanding their knowledge learning this library.

The Top 5 Programming Languages in 2022 to get a job -React JS and React Native Tutorial The Complete Developer Course Part#2 [Urdu/Hindi]

Props is simply shorthand for properties. Props are how components talk to each other and the data flow is immutable. Props are passed down the component tree from parent to children and vice versa.

The Virtual DOM is a light-weight abstraction of the DOM. You can think of it as a copy of the DOM, that can be updated without affecting the actual DOM. It has all the same properties as the real DOM object, but doesn't have the ability to write to the screen like the real DOM In all web applications one of the most expensive operations from which an app suffers is mutating the DOM. To solve this problem, React maintains a virtual representation of the DOM, which is called Virtual DOM (VDOM). Along with a diffing algorithm, React is able to compute the data against

Follow the below steps to setup a React development environment and test it by downloading and running an example React application. Install Node.js and npm. Install the Git CLI. Install Visual Studio Code. Run an example React application (optional) we will show you how to set up an environment for successful React development. Notice that there are many steps involved but this will help speed up the development process later

React is one of the most popular JavaScript libraries for building user interfaces. If you want to become a front-end developer or find a web development job, you would probably benefit from learning React in-depth. In this post, you're going to learn some of the basics of React like creating a component, the JSX syntax, and Props. If you have no or little experience with React, this post is for you.

The key difference between props and state is that state is internal and controlled by the component itself while props are external and controlled by whatever renders the component In a React component, props are variables passed to it by its parent component. State on the other hand is still variables, but directly initialized and managed by the component. The state can be initialized by props

Components are the smallest units in React application development; they are indeed the most fundamental part of React. React is a library for building UIs and components are the key for creating any UI in React. You might think of it as widgets (like in Flutter) that you can plug in anywhere.

Axios is a JavaScript library for managing your code’s ability to reach out to the web. It’s common to use APIs to connect resources, exchange data, and access services.

A RESTful API is an architectural style for an application program interface (API) that uses HTTP requests to access and use data. That data can be used to GET, PUT, POST and DELETE data types, which refers to the reading, updating, creating and deleting of operations concerning resources.

Redux is one of the most confusing and probably a difficult topic for someone who is trying to learn it from scratch. But why??

Hooks were added to React in version 16.8. Hooks allow function components to have access to state and other React features. Because of this, class components are generally no longer needed.

The React useState Hook allows us to track state in a function component. State generally refers to data or properites that need to be tracking in an application.

The useEffect Hook allows you to perform side effects in your components. Some examples of side effects are: fetching data, directly updating the DOM, and timers. useEffect accepts two arguments. The second argument is optional. useEffect(, )

React Context is a way to manage state globally. It can be used together with the useState Hook to share state between deeply nested components more easily than with useState alone.

The useRef Hook allows you to persist values between renders. It can be used to store a mutable value that does not cause a re-render when updated. It can be used to access a DOM element directly.

The useReducer Hook is similar to the useState Hook. It allows for custom state logic. If you find yourself keeping track of multiple pieces of state that rely on complex logic, useReducer may be useful.

The React useCallback Hook returns a memoized callback function.