Top Node.js Interview Questions & Answers for All Levels
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08 Jan, 2025
Most Frequently asked Node.js Interview Questions
Node.js is a powerful, open-source, cross-platform runtime environment that allows developers to run JavaScript code outside of a web browser. It is built on the V8 JavaScript engine (the same engine used by Google Chrome) and is primarily used for building server-side applications. Node.js enables JavaScript to be used for back-end development, making it possible to use a single programming language (JavaScript) for both client-side and server-side code.
08 Jan, 2025
Node.js Interview Questions to Ace Your Interviews
Express.js is a minimalist and flexible web application framework for Node.js that provides a robust set of features for building web and mobile applications. It simplifies the process of handling HTTP requests, routing, middleware integration, and templating, making it a popular choice for developers building server-side applications with Node.js.
08 Jan, 2025
Node.js Interview Questions and Answers
Error handling in Node.js is crucial for ensuring that your application runs smoothly and gracefully handles unexpected situations. Since Node.js is asynchronous and event-driven, it requires a careful approach to error handling, especially in callbacks, promises, and event-driven systems. Here's how you can handle errors in various scenarios in Node.js:
08 Jan, 2025
Node.js Interview Questions
Event-driven architecture in Node.js is a design pattern where the flow of the program is determined by events. In this architecture, the system is built around the concept of events that trigger specific actions or functions, often referred to as event handlers.
08 Jan, 2025
Top Node.js Interview Questions(2025)
async/await in Node.js is syntactic sugar built on top of Promises that allows you to write asynchronous code in a more readable, synchronous-like manner. It simplifies the process of working with Promises and makes asynchronous code easier to manage and understand.
08 Jan, 2025
Top Node.js Interview Questions for 2025
Node.js has gained widespread popularity for building web servers due to its unique features and advantages, particularly for handling I/O-heavy applications and concurrent requests. Below are some key advantages of using Node.js for building web servers:
08 Jan, 2025
Top Node.js Interview Questions
In Node.js, callbacks are functions that are passed as arguments to other functions and are executed after the completion of an asynchronous operation. The callback function is called (or invoked) when the operation finishes, allowing Node.js to handle tasks asynchronously without blocking the main thread. This is an essential concept in Node.js, which is designed around asynchronous I/O to maintain non-blocking performance.
02 Jan, 2025
Most Frequently asked Interview Questions of express
In Express.js, req.body is an object that contains data sent in the body of an HTTP request. It is typically used in POST, PUT, and PATCH requests, where data is sent by the client (e.g., via forms, JSON, or other types of request bodies) to the server.
02 Jan, 2025
Most Frequently asked express Interview Questions (2024)
In Express.js, req.body is an object that contains data sent in the body of an HTTP request. It is typically used in POST, PUT, and PATCH requests, where data is sent by the client (e.g., via forms, JSON, or other types of request bodies) to the server.
26 Dec, 2024