Due to its single-threaded design, is generally used for non-blocking, event-driven servers. It is used for traditional web pages and back-end API services despite being designed with real-time, push-based architectures in mind.
Following are some of the Node js Interview Questions for Novices
Functions are first-class functions when they can be used in the same way as any other variable. There are numerous more programming languages that adhere to this, including JS, such as Scala, Haskell, etc. Because of this, a function can now return another function or be supplied as a parameter to another function (a callback) (higher-order function). Higher-order methods like map and filter are frequently utilised.
2. What and how does Node.js operate?
3. In your Node.js project, how do you manage packages?
4. How is Node.js superior to other widely used frameworks?
Contrary to other frameworks where developers must employ thread management, Node.js offers ease in development thanks to its non-blocking I/O and even-based approach, which results in quick response times and concurrent processing.
Finally, there are plenty of libraries, so we won’t have to keep inventing things.
5. Describe the steps. how “Control Flow” regulates the calls to the functions?
Control the execution’s timing
Gather data and restrict concurrency
Call the program’s subsequent step.
6. What benefits come from utilising promises rather than callbacks?
The primary benefit of using promises is that you receive an object to determine what needs to be done after the async job is finished. As a result, callback hell is avoided and the code is more manageable.
7. What does node JS fork mean?
In general, child processes are created via a fork. To launch numerous workers and execute the code, a new instance of the v8 engine is created in node.
Node.js was specifically developed as an async processing experiment. This was done to test a new theory of async processing on a single thread instead of the current thread-based scaling implementation across several frameworks.