Node.js is a super popular server-side platform that more and more organizations are using. If you are preparing for a career change and have an upcoming job interview, it’s always a good idea to prepare and brush up on your interview skills beforehand. Middleware in Express.js refers to functions that have access to the request, response, and the next middleware function in the application’s request-response cycle.
Junior-Level Node.js Interview Questions
The fork() method in Node Js creates a new process that is a copy of the existing one. It has access to all the same variables and functions as the existing process. On the other hand, the spawn() method creates a new process separate from the existing one.
Middle Frontend Developer TypeScript, NestJS
Front-end developers focus on the client side of the application, while back-end developers focus on the server side of the application. Both roles are important for building a successful web application and require different skill sets and expertise. Global objects in Node.js are objects that are available in all modules without the need for an junior node js developer explicit require statement.
Hire Developers
If candidates can name a few applications that developers use these technologies for, they may be a good match for your team. For example, many programmers use Node.js when creating streaming services, online games, and chat tools. In this example, the master process (cluster.isMaster) creates a cluster of worker processes using cluster.fork(). Each worker process listens on Software engineering the same port and handles incoming HTTP server connections.
Explain the Node.js redis module
An event-driven programming approach uses events to trigger various functions. An event can be anything, such as typing a key or clicking a mouse button. A call-back function is already registered with the element executes whenever an event is triggered.
- This runtime environment is implemented on the V8 engine that’s used in Google Chrome.
- While answering general questions, make sure to respond in a clear, concise and confident tone.
- To prepare for Node.js coding interview questions, focus on mastering key concepts and applying them to real-world scenarios.
- Modules are like JavaScript libraries that can be used in a Node.js application to include a set of functions.
- When working with HTTP connections or in web applications, the synchronous methods may block other requests.
- As developers are busy getting an experience in node.js it’s nice to have a curated list of Node.js interview questions to revise.
It is used to execute JavaScript code in web browsers and Node.js. This command will ensure that the HTTP library is loaded completely, along with the exported object. Next in this blog comprising Node.js questions, you need to understand how you can import libraries into Node.js.