ITGeeks Interview Questions and Answers

Use React's state management to retain state in components.

• Use the useState hook to create and update state variables

• Use the setState method to update state in class components

• Use context API or Redux for managing state across multiple components

Firebase Firestore is a flexible, scalable database for mobile, web, and server development.

• NoSQL database provided by Firebase

• Real-time syncing of data across all clients

• Supports offline data persistence

• Allows querying and indexing for efficient data retrieval

Data can be sent from one page to another using methods like GET, POST, SESSION, COOKIES, and AJAX.

• Use GET method to send data through URL parameters

• Use POST method to send data through form submissions

• Use SESSION to store data temporarily across multiple pages

• Use COOKIES to store data on the client side

• Use AJAX to send data asynchronously without reloading the page