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Event Types in Node Js

Filed under: NodeJs on 2024-02-22 21:01:23
Sr.No.Events & Description1newListener1. event − String: the event name2. listener − Function: the event handler functionThis event is emitted any time a listener is added. When this event is triggered, the listener may not yet have been added to the array of listeners for the event.2removeL

Event Emitter Pattern in Node Js

Filed under: NodeJs on 2024-02-22 20:51:05
AIM:To demonstrate the event emitter patternObjective:Explanation of event emitter pattern with programme.Theory:The EventEmitter is a module that facilitates communication/interaction between objects in Node. EventEmitter is at the core of Node asynchronous event-driven architecture. Many of Node

Standard Callback Pattern in Node Js

Filed under: NodeJs on 2024-02-22 20:46:50
AIM: To demonstrate the use of Standard callback pattern Objective: Node js callback pattern function callback Theory: Callback is an asynchronous equivalent for a function. A callback function is called at the completion of a given task. Node makes heavy use of callbacks. All the APIs of 

Node.js – Console

Filed under: NodeJs on 2024-02-22 20:42:55
Node.js console is a global object and is used to print different levels of messages to stdout and stderr. There are built-in methods to be used for printing informational, warning, and error messages. It is used in synchronous way when the destination is a file or a terminal and in asynchronous way

Node.js - REPL Terminal

Filed under: NodeJs on 2024-02-22 20:38:39
REPL stands for Read Eval Print Loop and it represents a computer environment like a Windows console or Unix/Linux shell where acommand is entered and the system responds with an output in an interactive mode. Node.js or Node comes bundled with a REPLenvironment. It performs the following tasks −R

Traditional Web Server Model

Filed under: NodeJs on 2024-02-22 16:28:21
The traditional web server model consists of a pool of threads which may process requests. Each time a new request comes in, it is assigned to a different thread in the pool. In the event a request is received and a thread is not available, the request will have to wait until a previous request fini

How to Install Node.js and NPM on Windows

Filed under: NodeJs on 2024-02-22 16:25:43
In a web browser, navigate to https://nodejs.org/en/download/. Click the Windows Installer button to download the latest default version. At the time this article was written, version 10.16.0-x64 was the latest version. The Node.js installer includes the NPM package manager.Step 2: Install Node.js a

What is Node.js Process Model

Filed under: NodeJs on 2024-02-22 16:22:25
The Node.js process model differs from traditional web servers in that Node.js runs in a single process with requests being processed on a single thread. One advantage of this is that Node.js requires far fewer resources. When a request comes in, it will be placed in an event queue. Node.js uses an