Mern Full Stack Developer Interview Questions and Answers for Freshers

React is a JavaScript library for building user interfaces. State is a JavaScript object that stores data in a component. useEffect is a React hook for handling side effects.

• React is a library for building UI components

• State is a JavaScript object that stores data within a component

• useEffect is a hook used for handling side effects in React components

Callback functions are functions passed as arguments to other functions to be executed later.

• Callback functions are commonly used in asynchronous programming.

• They allow for functions to be executed after another function has finished.

• Examples include event listeners in web development.

EventLoop is a mechanism in JavaScript that allows for asynchronous operations to be executed in a non-blocking manner.

• EventLoop is responsible for handling asynchronous operations in JavaScript.

• It continuously checks the call stack and the task queue, moving tasks from the queue to the stack when the stack is empty.

• EventLoop ensures that JavaScript remains single-threaded and non-blocking, allowing for efficient handling of asynchronous tasks.

Create a UI clone of a given website for a Mern Full Stack Developer position.

• Study the layout, design, and functionality of the given website thoroughly.

• Use HTML, CSS, and JavaScript to replicate the UI elements and features.

• Ensure responsiveness and compatibility with different devices and browsers.

• Consider using frameworks like React for efficient development.

• Test the clone extensively to ensure it matches the original website.

Oops concept in Java refers to Object-Oriented Programming principles like Inheritance, Encapsulation, Polymorphism, and Abstraction.

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

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the implementation details and only shows the necessary features to the outsid...read more