Techpile Technology Interview Questions and Answers

React-router-dom is a routing library for React applications.

• It allows for declarative routing in React applications.

• It provides components like BrowserRouter, Route, Switch, and Link.

• BrowserRouter is used to wrap the entire application and provide routing functionality.

• Route is used to define a route and the component to render when the route is accessed.

• Switch is used to render only the first matching route.

• Link is u...read more

Components re-rendering is the process of updating the UI when there is a change in the component's state or props.

• React re-renders the component and its child components when there is a change in state or props

• Re-rendering can be optimized using shouldComponentUpdate or React.memo

• Re-rendering can cause performance issues if not optimized properly

OOPs concepts refer to Object-Oriented Programming principles such as inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation det