How to work Node JS

It is a used as backend service where javascript works on the server-side of the application . This way javascript is used on both frontend and backend. Node. js runs on chrome v8 engine which converts javascript code into machine code, it is highly scalable, lightweight, fast, and data-intensive.

js extends the capabilities of JavaScript to run on the backend, server-side portion of a web application architecture, as well as for serverless architecture. Node. js does this by executing within its own runtime on the server . A good analogy to draw is the comparison between Node.

js is single-threaded because the JavaScript programming language is single-threaded.

The Event Loop takes the timer with the shortest wait time and compares it with the Event Loop’s current time . If the wait time has elapsed, then the timer’s callback is queued to be called once the call stack is empty. Node. js has different types of timers: setTimeout() and setInterval() .