NodeJS Presentation
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Node JS presentation which includes Introduction History Background WHere to use How to install and use Applications of NodeJS
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Node.js.pdf
Node.js
JavaScript code may be run outside of a web browser Thanks to the open-source, cross-platform runtime environment known as Node.js. Ryan Dahl first presented it in 2009, and it has subsequently gained popularity as a server-side programming language.
In this post, we'll examine Node. Js' fundamentals and how server-side programming might benefit from it. We'll also look at some of Node. Js' essential attributes have helped it become so well-liked by programmers.
Overview of Node.js
A server-side runtime environment called Node.js was constructed on top of Google's V8 JavaScript engine. Developers can now employ JavaScript, which was previously solely used on the client side, to create server-side code. With the help of Node.js, programmers can build highly scalable, event-driven apps that can manage several concurrent connections.
History of Node.js
Developer Ryan Dahl first released Node.js in 2009 with the goal of enabling JavaScript programmers to build highly scalable network applications. He developed Node.js on top of the Google Chrome-compatible V8 JavaScript engine and made it available as an open-source project.
Benefits of Node.js
The use of Node.js for server-side development has a number of advantages. A few of these are:
Performance: The V8 JavaScript engine, which is highly optimized for performance, is the foundation upon which Node.js is constructed. Because of this, Node.js apps can handle numerous connections at once without experiencing performance issues.
Scalability: Node.js applications have a great degree of scalability and can manage numerous concurrent connections without the installation of additional hardware.
Easy to Learn:Node.js is reasonably simple to learn because it leverages JavaScript, a well-known language among developers.
Large Community: Node.js has a sizable developer community that supports one another and contributes to the open-source project.
Introduction to Node.js
Setting up Node.js
You must install Node.js on your computer before you can begin using it. Node.js can be downloaded from the official Node.js website, which also provides installation guidance.
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Knowledge of the Event Loop
On top of an event-driven, non-blocking I/O mechanism, Node.js is constructed. This indicates that Node.js processes numerous jobs concurrently by using an event loop rather than waiting for I/O operations to finish before going on to the next task. Because of this, Node.js apps can handle numerous connections at once without experiencing performance issues.
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Nodejs
Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine. It allows JavaScript to be used for server-side scripting, enabling developers to write scalable network applications using JavaScript. Some key features of Node.js include non-blocking I/O calls, asynchronous programming, and an event loop that handles concurrency. Popular uses of Node.js include real-time web applications with websockets, fast file uploads, and any application requiring real-time data processing.
NWJS. Web on desktop
NWJS allows developers to create desktop applications using web technologies like HTML, CSS, and JavaScript. It works by embedding Chromium and Node.js in the app, enabling access to native system APIs and a full JavaScript environment. This allows building cross-platform desktop apps that can leverage existing frontend skills and code. NWJS apps can be run from source or compiled into distributable binaries. It provides many native features like file/argument handling, tray icons, and frameless windows. Tests can be run in Mocha and hot reloading enabled during development.
Node js Introduction
Node.js is an open source JavaScript runtime environment used to build real-time web applications. The document introduces Node.js, the npm package manager, the Express web application framework, and how to connect a Node.js application to MongoDB. Key points covered include Node.js being single-threaded and event-driven, using npm to install and use packages locally or globally, Express providing features for building web apps and APIs, and using modules like Mongoose to connect a Node app to MongoDB.
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NodeJS Presentation
- 1. Node.js® Server Side JavaScript Presented by • Faisal Shahzad Khan • M. Basit Butt • M. Mashhood Shahid • M. Saqib Sajjad
- 2. WHAT TO EXPECT AHEAD…. Introduction Background Why NodeJS? Blocking/Non-blocking(NodeJS) Requirements & Installation Applications
- 3. INTRODUCTION • In simple words Node.js is ‘server-side JavaScript’. • In not-so-simple words Node.js is a high- performance network applications framework, well optimized for high concurrent environments. • It’s a command line tool. • In ‘Node.js’ , ‘.js’ doesn’t mean that its solely written JavaScript. It is 40% JS and 60% C++. From the official site ___ ‘Node's goal is to provide an easy way to build scalable network programs’ nodejs.org
- 4. Background • Node.js runs on V8. • It was created by Ryan Dahl in 2009. • Is still in Beta phase. Latest version is 12.14.0 Powerful NodeJS ___ JavaScript is awesome ___
- 5. Why use Node.js • High throughput • Real-time collaboration • Horizontal scalability • Evented model • Javascript for web, network, console • Node Package Manager nodejs.org
- 6. NPM Node Package Manager • npm is the default package manager for Node.js. • It manages dependencies for an application. • It also allows users to install Node.js applications that are available on the npm registry. Non-Blocking
- 7. Main Feature Non-Blocking… But First to know about Blocking? Non-Blocking
- 8. Blocking Read data from file Show data Do other tasks var data = fs.readFileSync(“test.txt”); console.log( data ); console.log( “Do other tasks” ); nodejs.org
- 9. Non-BlockingMain • Read data from file o When read data completed, show data • Do other tasks fs.readFile( “test.txt”, function( err, data ) { console.log(data); }); nodejs.org
- 10. Requirements & Installation • NodeJS • Code Editor • Terminal • Mind http://nodejs.org/ and Download tar.gz Extract to any directory $ ./configure && make install ‘node YOUR_FILE.js’
- 11. BENEFITS • Multi-Platform (Linux, Mac, Windows) • Open source technology • Many NPM packages availables on npmjs.org • One development language JS on client and server side • lightweight and efficient NodeJS
- 12. When to use it? • Streaming based realtime services • Chat/Messaging • Real-time Applications • Intelligent Proxies • High Concurrency Applications • Communication Hubs • Coordinators • Create an HTTP/TCP/DNS servers ___ Linkedin
- 13. hankYou