Node JS

Node Js Programing Language


Node.js was originally written by Ryan Dahl in 2009, about thirteen years after the introduction of the first server-side JavaScript environment, Netscape's LiveWire Pro Web. The initial release supported only Linux and Mac OS X. Its development and maintenance was led by Dahl and later sponsored by Joyent. Dahl was inspired to create Node.js after seeing a file upload progress bar on Flickr. The browser did not know how much of the file had been uploaded and had to query the Web server. Dahl desired an easier way

In June 2011, Microsoft and Joyent implemented a native Windows version of Node.js. The first Node.js build supporting Windows was released in July 2011.

Students will be able to create Project,information and be able to create Application of Node JS software development.

Includes:  12 Articles  700 Skill Questions  10 Skill Videos  20 Quiz Sections

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Node JS Development Skills - For Beginners & Professionals
Enhancements to Node JS go hand in hand with the overall Node JS platform development. The SDK also supports older versions of the Android platform in case developers wish to target their applications at older devices


"The history of Android software development includes a comprehensive set of development tools.These include a debugger, libraries, a handset emulator based on , sample code, and tutorials. Currently supported development platforms include computers running Linux (any modern desktop Linux distribution), Mac OS X 10.5.8 or later, Windows was released in July 2011

 Great Achievement
  • Easy To Learn
  • Open Source and High ROI.
  • Package management
  • Unified API
  • Event loop .
  • Easy To Use
  • Threading
 Currently Version :-As of October 2017 the following versions are supported by Microsoft:
  • v0.10.x 11 March 2013
  • v0.12.x 6 Jan 2015
  • 4.x 08 Sep. 2015
  • 5.x 29 Oct. 2015
  • 6.x 26 April 2016
  • 7.x 25 Oct. 2016
  • 8.x 30 May 2017
  • 9.x 31 Oct. 2017
Includes:  12 Articles  700 Skill Questions  10 Skill Videos  20 Quiz Sections
 Node JS Programming Language Introduction
  • The ability to write the Node JS development language — the cornerstone of all relational operations — is essential for anyone who develops applications. In this training course, you learn how to optimize the accessibility and maintenance of data with the Node JS programming language, and gain a solid foundation for building, programming, and manipulating .
 Node.js-Node.js Reference
 Node.js-Introduction to Androi
 :Node.js- Prerequisites
 Node.js-Execute Node.js
 : Node.js - Scaling Application
 Node.js - Express Framework
 Mock Tests & Assignments
  • Each Module will be followed by objective mockup tests and practical assignments which help you to monitor your learning progress and Evaluate yourself.
 Support Any Device such as Desktop,Laptop,Mobile, on Any Device
 Motivational Videos
 Real-life Case Studies
 365 Days Access
  • You get 365 days access to the Learning Management System (LMS). This includes video, course material, exercise files and ppts used during the session.
 24x7 Support
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 Q1.What is node.js?
  • Node.js is a Server side scripting which is used to build scalable programs. Its multiple advantages over other server side languages, the prominent being non-blocking I/O..
 Q2.What do you mean by the term I/O ?
  • I/O is the shorthand for input and output, and it will access anything outside of your application. It will be loaded into the machine memory to run the program, once the application is started.
 Q3.What does event-driven programming mean?
    In computer programming, event driven programming is a programming paradigm in which the flow of the program is determined by events like messages from other programs or threads. It is an application architecture technique divided into two sections 1) Event Selection 2) Event Handling
 Q4. What is control flow function?
  • A generic piece of code which runs in between several asynchronous function calls is known as control flow function.
 Q5.Why Node.js is single threaded?
  • For async processing, Node.js was created explicitly as an experiment. It is believed that more performance and scalability can be achieved by doing async processing on a single thread under typical web loads than the typical thread based implementation.
 Q6.Does node run on windows?
  • Yes -node run on windows
 Q7. Why node.js is quickly gaining attention from JAVA programmers?
  • Node.js is quickly gaining attention as it is a loop based server for JavaScript. Node.js gives user the ability to write the JavaScript on the server, which has access to things like HTTP stack, file I/O, TCP and databases.
 Q8.What is an event loop in Node.js ?
  • To process and handle external events and to convert them into callback invocations an event loop is used. So, at I/O calls, node.js can switch from one request to another .
 Q9. How Node.js overcomes the problem of blocking of I/O operations?
  • Node.js solves this problem by putting the event based model at its core, using an event loop instead of threads.
 Q10. What is the difference between Node.js vs Ajax?
  • The difference between Node.js and Ajax is that, Ajax (short for Asynchronous Javascript and XML) is a client side technology, often used for updating the contents of the page without refreshing it. While,Node.js is Server Side Javascript, used for developing server software. Node.js does not execute in the browser but by the server.
 Q11. What is ‘Callback’ in node.js?
  • Callback function is used in node.js to deal with multiple requests made to the server. Like if you have a large file which is going to take a long time for a server to read and if you don’t want a server to get engage in reading that large file while dealing with other requests, call back function is used. Call back function allows the server to deal with pending request first and call a function when it is finished.
 Q12. What does it mean “non-blocking” in node.js?
    In node.js “non-blocking” means that its IO is non-blocking. Node uses “libuv” to handle its IO in a platform-agnostic way. On windows, it uses completion ports for unix it uses epoll or kqueue etc. So, it makes a non-blocking request and upon a request, it queues it within the event loop which call the JavaScript ‘callback’ on the main JavaScript thread.