This document provides an introduction and overview of Node.js and MongoDB. It discusses that Node.js is a JavaScript runtime built on Chrome's V8 JavaScript engine that uses an event-driven, non-blocking I/O model. It can be used for real-time applications and is well-suited for I/O-intensive applications. MongoDB is also introduced as a popular JSON-based NoSQL database that can be easily used with Node.js applications. Examples are given for connecting to MongoDB from Node.js code.
This is an introduction to NodeJS which is an open-source, cross-platform run-time environment for developing server-side Web Applications. It also discusses the implications of NodeJS in Internet of Things (IoT).
NodeJS is an open source, cross platform run time environment for server side and networking application. NodeJS is popular in development because front & back end side both uses JavaScript Code.
This is an introduction to NodeJS which is an open-source, cross-platform run-time environment for developing server-side Web Applications. It also discusses the implications of NodeJS in Internet of Things (IoT).
NodeJS is an open source, cross platform run time environment for server side and networking application. NodeJS is popular in development because front & back end side both uses JavaScript Code.
Node.js Tutorial for Beginners | Node.js Web Application Tutorial | Node.js T...Edureka!
This Edureka "Node.js tutorial" will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi-Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
9) Demo – Grocery List Web Application using Node.js
This is the slide deck from the popular "Introduction to Node.js" webinar with AMD and DevelopIntelligence, presented by Joshua McNeese. Watch our AMD Developer Central YouTube channel for the replay at https://www.youtube.com/user/AMDDevCentral.
What is Node.js | Node.js Tutorial for Beginners | Node.js Modules | Node.js ...Edureka!
This Edureka "What is Node.js" tutorial will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi – Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
Top 50 Node.js Interview Questions and Answers | EdurekaEdureka!
YouTube Link: https://youtu.be/6WYEmUVhiwQ
** Node.js Certification Training: https://www.edureka.co/nodejs-certification-training **
This Edureka PPT on 'Node.js Interview Questions' will help you in preparing better for your Node.js Interviews and ace it. In this session, we will be discussing Top 50 frequently asked questions in Node.js.
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
This is a presentation I prepared for a local meetup. The audience is a mix of web designers and developers who have a wide range of development experience.
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
Quick introduction about Node.js, what is it? What is Node not?
What is V8 engine?
How to Install Node.js
github: https://github.com/elbassel/MEAN-Training.git
Node.js Tutorial for Beginners | Node.js Web Application Tutorial | Node.js T...Edureka!
This Edureka "Node.js tutorial" will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi-Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
9) Demo – Grocery List Web Application using Node.js
This is the slide deck from the popular "Introduction to Node.js" webinar with AMD and DevelopIntelligence, presented by Joshua McNeese. Watch our AMD Developer Central YouTube channel for the replay at https://www.youtube.com/user/AMDDevCentral.
What is Node.js | Node.js Tutorial for Beginners | Node.js Modules | Node.js ...Edureka!
This Edureka "What is Node.js" tutorial will help you to learn the Node.js fundamentals and how to create an application in Node.js. Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of server tools and applications. Below are the topics covered in this tutorial:
1) Client Server Architecture
2) Limitations of Multi – Threaded Model
3) What is Node.js?
4) Features of Node.js
5) Node.js Installation
6) Blocking Vs. Non – Blocking I/O
7) Creating Node.js Program
8) Node.js Modules
Top 50 Node.js Interview Questions and Answers | EdurekaEdureka!
YouTube Link: https://youtu.be/6WYEmUVhiwQ
** Node.js Certification Training: https://www.edureka.co/nodejs-certification-training **
This Edureka PPT on 'Node.js Interview Questions' will help you in preparing better for your Node.js Interviews and ace it. In this session, we will be discussing Top 50 frequently asked questions in Node.js.
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
This is a presentation I prepared for a local meetup. The audience is a mix of web designers and developers who have a wide range of development experience.
Getting started with the reactjs, basics of reactjs, introduction of reactjs, core concepts of reactjs and comparison with the other libraries/frameworks
Quick introduction about Node.js, what is it? What is Node not?
What is V8 engine?
How to Install Node.js
github: https://github.com/elbassel/MEAN-Training.git
Node Js Non-blocking or asynchronous Blocking or synchronous.pdfDarshanaMallick
Node.js is a server-side scripting language based on Google’s V8 Javascript engine. Node js is a single-threaded and highly scalable system. Instead of separate processes and threads, it uses asynchronous, event-driven I/O operations. So It can achieve high output via single-threaded event loop and non-blocking I/O.
Table of Contents
Node.js: Why and Where to Use It?
How to Run Code in Node.js?
Why Node Js is single-threaded?
What is Non-blocking or asynchronous?
What is Blocking or synchronous?
What is IO?
Blocking vs Non Blocking NodeJS
Blocking or Non-blocking in Node.js: Which is Faster?
Dangers of Mixing Blocking and Non-Blocking Code
How can We Convert Blocking Code to Non-blocking Code?
Pros and Cons of Non Blocking IO Node.js
Is it possible to use asynchronous architecture?
Node.js: Why and Where to Use It?
Node.js has gained immense popularity in recent years due to its unique features and capabilities. It is a powerful JavaScript runtime built on Chrome’s V8 JavaScript engine, which enables developers to build scalable and high-performance applications. In this article, we will explore the reasons why you should consider using Node.js and where it can be most beneficial.
Why to Use Node.js?
Efficient and Scalable:
Node.js is known for its efficiency and scalability, making it an excellent choice for developing applications that can handle a large number of concurrent connections. It uses an event-driven, non-blocking I/O model, allowing it to handle multiple requests without getting blocked, unlike traditional blocking I/O models used in other languages. This makes Node.js ideal for applications that require real-time interactions, such as chat applications, collaborative tools, and gaming platforms.
Single Language, Full Stack:
One significant advantage of Node.js is that it enables developers to use JavaScript both on the server and the client side. This means that you can have a seamless development experience, using the same language and libraries throughout the entire stack. This consistency reduces the complexity of development and eases the transition between front-end and back-end development tasks. It also enables the reuse of code and modules, resulting in faster development cycles and increased productivity.
Large and Active Community:
Node.js has a vibrant and extensive community of developers, which means you can easily find support, libraries, and resources to help you in your Node.js development journey. The community actively contributes to the Node Package Manager (NPM), which hosts a vast collection of open-source packages that can be easily integrated into your projects. With a rich ecosystem and continuous community-driven enhancements, Node.js ensures that you can find solutions to most of your development challenges.
Where to Use Node.js?
High Performance:
Node.js’s event-driven, non-blocking architecture allows it to handle a large number of concurrent connections efficiently. This, coupled with its ability
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.
figuring out npm
Developers may quickly install and manage dependencies for their Node.js apps using npm (Node Package Manager), a Node.js package manager. There is no need to install npm individually because it is part of Node.js.
Basics of Node.js
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.
In this presentation, N. Kishorekumar, a Drupal Consultant at Valuebound will give an overview of Node.js, a JavaScript runtime built on Chrome's V8 JavaScript engine. He will discuss here the background, theories and the relevance of Node.js.
*****************************************
Get Socialistic
Our website: http://valuebound.com/
LinkedIn: https://www.linkedin.com/company/valuebound/
Facebook: https://www.facebook.com/valuebound/
Twitter: https://twitter.com/valuebound
1> What is node
2> What is node.js
3> Installation steps
4> Create first Node application
5> How it works ?
6> Why node is so popular ?
7> Where to use ?
8> Advantages
9> Disadvantages
10> Statistics
Web development with Node.js, Fifth Edition
The most popular server-side web development platform is Node.js, which enables programmers to utilize the same tools and paradigms for both server-side and client-side applications. This revised fifth edition of Node.js Web Development walks you through current ideas, methods, and best practices for utilizing Node.js while concentrating on the new capabilities of Node.js 14, Express 4.x, and ECMAScript.
He book begins by guiding you through the fundamental ideas of creating server-side web applications with Node.js. You'll discover how to create a full-featured Node.js web application with a backend database tier to enable you to experiment with various databases. Terraform and Docker Swarm will be used to deploy the program to actual web servers, such as a cloud hosting infrastructure based on AWS EC2, while integrating additional technologies.
As you advance, you'll learn about functional and unit testing as well as using Docker to install test infrastructure. Finally, you'll learn how to implement a variety of app security measures using best practices, tighten the security of Node.js apps, provision HTTPS using Let's Encrypt, and more. The book will assist you in applying your knowledge across the complete life cycle of designing a web app with each chapter. You will have obtained useful Node.js web development expertise by the end of this book, and you will be able to create and deploy your own applications using a public web hosting service.
What Node.js is
Every frontend web developer has access to JavaScript, making it a tremendously popular programming language that has gained the stigma of being used just for client-side code in web pages. Given that you choose to read this book, there's a good chance you've heard of Node.js, a framework for writing JavaScript code outside of web browsers. Node.js, which has been around for ten years, is now a well-established programming environment that is utilized in numerous initiatives of various sizes.
You will learn about Node.js in this book. You will have gained knowledge of every stage of creating server-side web applications using Node.js by the time you finish this book, from conception to deployment and security. In writing this book, we made the following assumptions:
• You are already proficient in writing software.
• You are knowledgeable about JavaScript.
• You have some experience creating web applications in several languages.
Do we stick with a new programming tool only because it's the trendy new tool when we assess it? Maybe some of us do that, but the mature course of action is to compare each tool. The technical justification for choosing Node.js is what this chapter is all about. Prior to writing any code, it is important to understand what Node.js is and how it fits into the larger market for software development tools. Then, realizing that tinkering about in live code is frequently the greatest way to learn.
The server side the back-end app development of your product is arguably its most important part. Among all likely back-end app development skills to select from, Node.js is one of the basics. It involves the vast majority of modern business fields and real cases. Many smaller business and startups survey their lead and leverage the technology in developing web development.
An Introduction to Node.js Development with Windows AzureTroy Miles
Node.js has taken off in popularity. Find out why major internet companies like Yammer, CouchOne, DocumentCloud, and LinkedIn are using Node to power their servers. And why Microsoft added support for it to Azure. In this session we will build a simple yet functional web server using Node, enhance it using plugins known as Modules, and hopefully explain why Node is such a powerful new web server paradigm.
Node.js and Enterprise Web Apps: Know all About itFibonalabs
Ever since it was released in 2009, Node.js has been used extensively as a backend to build web applications. Its architecture of asynchronous input/output increases its performance and as it is based on JavaScript, makes it developer-friendly. Using it, we can serve more clients in less time with either the same or fewer resources as compared to a traditional Java-based application.
CareerHunt is the most trusted source of advice on career and job opportunities . We are a community of 150 mentors and over 200,000 learners. The E-book provides the technical skills needed for these job roles in computer science, software and information technology http://careerhunt.net/blog/careerbook/
Career options for Computer Science students includes Data Scientist and Analyst, Database Administrator ,Software developers, Application Analyst, Games Developer, Web Developer, Network Engineer and System Administrators ,Tele communication industry, Cloud Computing, Android and IOS app development, Government official for IT department and many more.
keywords; Data flow analysis, control dependency .
Program analysis is the method of computing properties of a program.It is useful for performing program optimiztion
Droidcon talk - Nov 23,2013. Intel Bangalore. Code is present here http://github.com/arvind-devaraj/android-opengles. Slides are borrowed from many acknowledged
Using Native Development Toolkit . Information collected from many sources http://lyaug.fr/slides/presentation-ndk/#/step-11
http://psrdotcom.blogspot.fr/2011/12/android-ndk-jni-windows-xp7-with-3264.html
Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
3. BACKGROUND
V8 is an open source JavaScript engine
developed by Google.
Node.js runs on V8
It was created by Ryan Dahl in 2009.
Is Open Source. It runs well on Linux
systems, can also run on Windows systems.
Similar to EventMachine (Ruby) or Python’s
Twisted or Perl’s AnyEvent
4. INTRODUCTION: BASIC
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.
‘Node's goal is to provide an easy way to
build scalable network programs’ - (from
nodejs.org!)
5. GETTING STARTED & HELLO WORLD
Install/build Node.js.
When you are done, open cmd/terminal and
type this:
‘node YOUR_FILE.js’
Here is a simple example, which prints ‘hello
world’
var sys = require(“sys”);
sys.puts(“hello”);
6. SOME THEORY: NON-BLOCKING I/O
Traditional I/O
var result = db.query(“select x from table_Y”);
doSomethingWith(result); //wait for result!
doSomethingWithOutResult(); //execution is
blocked!
Non-traditional, Non-blocking I/O
db.query(“select x from table_Y”,function (result)
{
doSomethingWith(result); //wait for result!
});
doSomethingWithOutResult(); //executes without any
delay!
7. WHAT CAN YOU DO WITH NODE.JS ?
You can create an HTTP server and print ‘hello
world’ on the browser in just 4 lines of JavaScript.
(Example included)
You can create a TCP server similar to HTTP
server, in just 4 lines of JavaScript. (Example
included)
You can create a DNS server.
You can create a Static File Server.
You can create a Web Chat Application like
GTalk in the browser.
Node.js can also be used for creating online
games, collaboration tools or anything which
sends updates to the user in real-time.
8. WHEN TO USE NODE.JS?
Node.js is good for creating streaming based
real-time services, web chat applications,
static file servers etc.
If you need high level concurrency and not
worried about CPU-cycles.
If you are great at writing JavaScript code
because then you can use the same
language at both the places: server-side and
client-side.
13. RESOURSCE TO GET STARTED
Watch this video at Youtube:
http://www.youtube.com/watch?v=jo_B4LTHi3
I
Read the free O’reilly Book ‘Up and Running
with Node.js’ @
http://ofps.oreilly.com/titles/9781449398583/
Visit www.nodejs.org for Info/News about
Node.js
Watch Node.js tutorials @
http://nodetuts.com/
For Info on MongoDB:
http://www.mongodb.org/display/DOCS/Home
For anything else Google!
14. SOME GOOD MODULES
Express – to make things simpler e.g.
syntax, DB connections.
Jade – HTML template system
Socket.IO – to create real-time apps
Nodemon – to monitor Node.js and push
change automatically
CoffeeScript – for easier JavaScript
development
Find out more about some widely used
Node.js modules at:
http://blog.nodejitsu.com/top-node-module-cr
eators
15. EXAMPLE: LETS CONNECT TO A DB
(MONGODB)
Install mongojs using npm, a mongoDB driver for
Node.js
npm install mongojs
Code to retrieve all the documents from a
collection:
var db = require("mongojs")
.connect("localhost:27017/test", ['test']);
db.test.find({}, function(err, posts) {
if( err || !posts) console.log("No posts found");
else posts.forEach( function(post) {
console.log(post);
});
});
16. JSON OVERVIEW
Similar to XML – lightweight
–
JavaScript Objects
– Natively parseable by JS (eval)
AJAX
- Language for REST based API design