Full Stack Web Developer Interview Questions and Answers for Freshers

Time complexity to add an element to a Singly Linked List is O(1) if added at the end using Tail pointer, and O(n) if added anywhere in the middle.

• Adding an element at the end of a Singly Linked List using the Tail pointer is a constant time operation, hence O(1).

• Adding an element anywhere in the middle of a Singly Linked List requires traversing the list to find the insertion point, resulting in a time complexity of O(n).

• For example, if we have a Singly Linked List with 5 el...read more

Optimizing JSON involves minimizing redundant data, using efficient data structures, and compressing data when necessary.

• Minimize redundant data by using references or IDs instead of repeating the same information multiple times.

• Use efficient data structures like arrays or dictionaries to store JSON data in a more organized and accessible way.

• Compress JSON data using techniques like gzip or deflate to reduce file size and improve loading times.

• Example: Instead of storing the ...read more

NextJs is a framework built on top of ReactJs, providing server-side rendering and other features for easier development.

• NextJs is a framework built on top of ReactJs, providing server-side rendering, routing, and other features for easier development.

• ReactJs is a JavaScript library for building user interfaces, while NextJs is a framework that adds functionality like server-side rendering and routing to React applications.

• NextJs simplifies the process of building React appli...read more

Multiple files can be uploaded using AJAX by sending a FormData object containing the files.

• Create a FormData object

• Append each file to the FormData object

• Send the FormData object using AJAX

Feature advantages refer to the benefits or strengths of a particular feature.

• Enhanced user experience

• Increased functionality

• Improved performance

• Competitive edge in the market

• Cost-effectiveness

• Scalability and flexibility

Yes, I prefer commuting to work by train for its reliability and eco-friendliness.

• I find commuting by train to be more reliable than other modes of transportation, as it is not affected by traffic congestion.

• Taking the train is also more eco-friendly compared to driving a car, as it reduces carbon emissions.

• Commuting by train allows me to relax, read, or work during the journey, making it a productive use of time.

To create a React app, you can use create-react-app command line tool.

• Use create-react-app command to create a new React app

• Navigate into the newly created app directory

• Start the development server using npm start

React Router Dom is a popular routing library for React applications.

• React Router Dom is used for handling routing in React applications.

• It allows for declarative routing using components like BrowserRouter, Route, Switch, and Link.

• React Router Dom enables navigation between different components without a full page reload.

• Example: