The author and license fields provide information about the author and license of the project. In JavaScript Full-stack developer (Node.jsReact.js) job this example, the readFileSync function is used to read the contents of a file from disk, and the program waits for this function to complete before moving on to the console.log statement. When a module is loaded with the required function in Node.js, the module.exports object is returned to the caller, providing access to the public interface of the module. NPM allows you to easily install packages by running a single command in your terminal.
What is NPM?
Node.js, on the other hand, is a runtime environment that allows developers to run JavaScript code on the server side. This triggers the callback function registered earlier, which logs a message to the console. Process.nextTick() is executed immediately after the current operation completes and before the event loop continues. MongoDB is a NoSQL document-oriented database that is designed to store and manage large volumes of unstructured data. It is a popular choice for Node.js applications because it uses JSON-like documents to store data, which makes it easy to work with in JavaScript. Instead, asynchronous functions use callbacks or Promises to signal when they have completed their task.
What are the trade-offs of using React Native in an interview?
By reviewing the top NodeJS interview questions and answers, you’ll have a solid foundation for landing your next job. Our free PDF of NodeJS interview questions and answers is a great resource for you if you are preparing for the interview. It includes a comprehensive list of questions and answers that cover a range of topics related to NodeJS, from basic concepts to more advanced topics. For example, an application might use different database settings or logging behavior in development versus production environments. Optimize the application code, assets, and dependencies for performance, security, and scalability.
How do you handle authentication and authorization in a Node.js application?
NPM allows you to define custom scripts in your package.json file, making it easy to automate common tasks, such as running tests, building your project, or deploying it to a server. The event loop checks for I/O events that are ready to be processed and queues the corresponding callbacks. The event loop processes the events in the event queue, executing their corresponding callbacks. Node.js is easy to learn and use, especially for developers with experience in JavaScript, making it a popular choice for building network applications.
How do you handle platform-specific code in React Native?
It uses JavaScript along with C/C++ for things like interacting with the filesystem, starting up HTTP or TCP servers, and so on. Due to its extensively fast-growing community and NPM, Node.js has become a very popular, open-source, and cross-platform app. It allows the development of very fast and scalable network apps that can run on Microsoft Windows, Linux, or OS X. Before we begin the questionnaire, if you have not gone through our AngularJS interview questions, bookmark it. It is the next most important skill you’ll need to become an ideal MEAN stack developer. Don’t worry, just read the top 30 Node.js interview questions and rest assured of the results.
- NPM allows you to easily install packages by running a single command in your terminal.
- What is it like to go into the interview process for a Full-Stack Developer role?
- As a full-stack developer with 4+ years of experience in IT, I’ve attended numerous interviews where Node.js is a critical focus area.
- Due to its extensively fast-growing community and NPM, Node.js has become a very popular, open-source, and cross-platform app.
- This process runs on a single CPU core and can become a bottleneck as the number of requests increases.
hour NodeJS full-stack developer interview questions.
Node.js has a variety of features that make it a popular choice for building network applications. This is going to be the most asked Node.js interview questions for freshers. Node.js has a non-blocking, event-driven I/O model, which makes it very fast and efficient, especially for handling large amounts of data or requests. EventEmitter is a core module of providing mechanism for emitting and handling events. The setTimeout() method schedules code execution after a specified delay, measured in milliseconds.
What are the different types of HTTP requests?
This may include tasks like minifying code, compressing assets, and using caching and CDNs to reduce load times. Node.js provides a built-in profiler that can be used to identify areas of an application that are using an excessive amount of memory. Other profiling tools, such Web development as Chrome DevTools or Node Inspector, can also be used to identify memory leaks. Event-driven architecture (EDA) is a popular architectural pattern in Node.js that enables developers to build highly scalable and efficient applications. The process.env property provides an object containing the values of environment variables. You can read or modify these variables as needed in your Node.js application.
Exports object in Node.js is used to export functions, objects, or values from a module and is returned as the value of the require() function when another module requires a module. Node.js is a server-side JavaScript runtime environment built on top of the V8 JavaScript engine, the same engine that powers Google Chrome. In the last section, we will now cover some of the advanced-level Node.js interview questions.