Category: Node JS Interview Question

The two types of API functions in Node.js are:

The distinction between method and product. This is accomplished through the use of nextTick() and setImmediate(). next Tick() postpones the execution of action until the next pass around the event loop, or it simply calls the callback function once the event loop’s current execution is complete, whereas setImmediate() executes a callback on the next cycle…

Event loops handle asynchronous callbacks in Node.js. It is the foundation of the non-blocking input/output in Node.js, making it one of the most important environmental features.

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.

The “require” command is used for importing external libraries. For example – “var http=require (“HTTP”).”  This will load the HTTP library and the single exported object through the HTTP variable. Now that we have covered some of the important beginner-level Node.js interview questions let us look at some of the intermediate-level Node.js interview questions.

Node.js Pros Node.js Cons Fast processing and an event-based model Not suitable for heavy computational tasks Uses JavaScript, which is well-known amongst developers Using callback is complex since you end up with several nested callbacks Node Package Manager has over 50,000 packages that provide the functionality to an application Dealing with relational databases is not…

There are two commonly used libraries in Node.js:

MongoDB is the most common database used with Node.js. It is a NoSQL, cross-platform, document-oriented database that provides high performance, high availability, and easy scalability.

Angular Node.js It is a frontend development framework It is a server-side environment It is written in TypeScript It is written in C, C++ languages Used for building single-page, client-side web applications Used for building fast and scalable server-side networking applications Splits a web application into MVC components Generates database queries