Navalt Interview Questions, Process, and Tips

React is a JavaScript library for building user interfaces.

• React allows developers to create reusable UI components.

• It uses a virtual DOM to improve performance by only updating the necessary parts of the actual DOM.

• React uses a unidirectional data flow, making it easier to manage state and props.

• React can be used with other libraries like Redux for state management.

Hooks are a feature in React that allow you to use state and other React features in functional components.

• Hooks were introduced in React 16.8.

• They allow you to use state and other React features without writing a class component.

• Examples of hooks include useState, useEffect, and useContext.

Performance optimization techniques in React improve rendering speed and user experience.

• Code splitting to load only necessary components

• Memoization to prevent unnecessary re-renders

• Virtualization for long lists to improve rendering performance

• Using shouldComponentUpdate or React.memo for functional components

• Minimizing unnecessary re-renders by using PureComponent or React.PureComponent

State in React is managed using useState hook for functional components and this.state for class components.

• Use useState hook for managing state in functional components

• Use this.state for managing state in class components

• State can be passed down to child components using props

• State can be updated using setState method

Server-Side Rendering is rendering the web page on the server and sending the fully rendered page to the client, while Client-Side Rendering is rendering the web page on the client's browser using JavaScript.

• Server-Side Rendering generates the HTML on the server and sends it to the client, resulting in faster initial page load.

• Client-Side Rendering loads a basic HTML page first and then uses JavaScript to render the co...read more