Answer- React is a JavaScript library for building user interfaces, the React framework uses Webpack to automatically compile React, JSX, and ES6 code while handling CSS file prefixes. it is a library rather than a language, the library first appeared in May 2013 and is now one of the most commonly used frontend libraries for web development.
Answer - React was created by Jordan Walke, a software engineer at Meta, who released an early prototype of React called "FaxJS".
Answer - Babel is a toolchain that is mainly used to convert ECMAScript 2015+ code into a backwards compatible version of JavaScript in current and older browsers or environments. Here is the Example .
Answer - Babel is a key tool that can translate JSX syntax, which is used to create HTML-like code in React components, into valid JavaScript code that can be executed in preferred browsers. By converting the JSX code into JavaScript functions that return the same HTML-like structures.
Answer - ReactDOM is a package in the React library that provides DOM-specific methods for rendering React components. It acts as a bridge between React's virtual DOM and the actual DOM in a web page.
Answer - To work with react we need 2 packages to import or link its CDN to our Documentation.
- React: This is the core library for building user interfaces in React.
- ReactDOM: This package provides methods for interacting with the DOM in React, like rendering components.
Answer - For adding react in our web application we must need node and npm in our system. And we need to follow these steps :-
- Set Up Your Development Environment.
- Create a New React Application: The easiest way to start a new React project is by using create-react-app, a tool that sets up a new React project with a sensible default configuration. Open your terminal and run the following command:
npx create-react-app my-react-app
- Navigate to the Project Directory
cd my-react-app
- Run the Development Server
npm start
Answer - ReactDOM.createRoot()
creates a root node where your React elements will live.
it is a important function in React that is used when we compile jsx code into javacsript by using babel.
Answer - There are 3 main properties that createElement accepts :
- Type or Element - it can be a string representing an HTML tag name example-, 'div', 'span' etc.
- Props or Properties - An object containing the properties or attributes of the React element. These properties include things like className, style, and any other custom properties that you want to pass to the component
- The child elements or content that will be nested within the created element. Children can be strings, other React elements, or arrays of React elements
Answer - React "render" and React "root" refer to key concepts related to displaying and updating the user interface.