Kalpas Innovations Interview Questions and Answers

addEventListener is used to attach an event handler to an element.

• addEventListener is a method used to listen for a specified event on an element.

• The 'useCapture' parameter determines the order in which event handlers are called.

• Example: element.addEventListener('click', myFunction);

Redis is used in Node.js + Express for caching, session management, and real-time data processing.

• Redis can be used for caching frequently accessed data to improve performance.

• It can also be used for session management to store user session data.

• Redis is commonly used for real-time data processing in applications like chat rooms or live updates.

• Example: Storing user sessions in Redis to maintain login state across mult