Nodejs

nodejs

What can Node JS do?

What Can Node.js Do? Node.js can generate dynamic page content. Node.js can create, open, read, write, delete, and close files on the server. Node.js can collect form data.

What is I/O in Node JS?

When Node.js performs an I/O operation, like reading from the network, accessing a database or the filesystem, instead of blocking the thread and wasting CPU cycles waiting, Node.js will resume the operations when the response comes back.

What is an event in Node JS?

Node.js files contain tasks that will be executed on certain events. A typical event is someone trying to access a port on the server. Node.js files must be initiated on the server before having any effect. Node.js files have extension .js.

What is the difference between NodeJS and browser?

Differences between Node.js and the Browser Node.js is an open-source and cross-platform JavaScript runtime environment. It is a popular tool for almost any kind of project! Node.js runs the V8 JavaScript engine, the core of Google Chrome, outside of the browser. This allows Node.js to be very performant.

What is NodeJS?

What is Node.js? 1 Node.js is an open source server environment 2 Node.js is free 3 Node.js runs on various platforms (Windows, Linux, Unix, Mac OS X, etc.) 4 Node.js uses JavaScript on the server

What is the difference between Node JS and JavaScript?

As with Node.js one can use JavaScript on the server, this means one can write JavaScript outside the browser. Additionally, Node.js has the same strength as JavaScript. And it is based on events. These are the 3 whales Node.js firmly stands on.

What are some cool things you can do with NodeJS?

Here is an example of a card game that is developed using NodeJS and Socket.io. And, here is a reference for this project. 4. Music Player One of the reasons NodeJS is being loved is “A lot of pre-built modules”.

What is the asynchronous model of Node JS?

the asynchronous model of Node.js gave an opportunity to advance app functionality and better UX As with Node.js one can use JavaScript on the server, this means one can write JavaScript outside the browser. Additionally, Node.js has the same strength as JavaScript. And it is based on events. These are the 3 whales Node.js firmly stands on.

How do I create events in Node JS?

Node.js has a built-in module, called Events, where you can create-, fire-, and listen for- your own events. To include the built-in Events module use the require () method.

What is EventEmitter in Node JS?

The events module provides us the EventEmitter class, which is key to working with events in Node.js. The event listener has these in-built events: Heres a detailed description of the most useful methods: Alias for emitter.on (). Emits an event.

What are the functions that listen to events in Node JS?

The functions that listen to events act as Observers. Whenever an event gets fired, its listener function starts executing. Node.js has multiple in-built events available through events module and EventEmitter class which are used to bind events and event-listeners as follows −.

What is the use of event loop in node?

Node.js is a single-threaded event-driven platform that is capable of running non-blocking, asynchronously programming. These functionalities of Node.js make it memory efficient. The event loop allows Node.js to perform non-blocking I/O operations despite the fact that JavaScript is single-threaded.

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