Create Restful Web Application With Node.js Express Framework

Create Restful Web Application With Node.js Express Framework

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  www.edureka.co/mastering-node-js View Mastering Node.jscourse details at www.edureka.co/mastering-node-js Create Restful Web Application With Node.js Express Framework For Queries: Post on Twitter @edurekaIN: #askEdureka Post on Facebook /edurekaIN For more details please contact us: US : 1800 275 9730 (toll free) INDIA : +91 88808 62004 Email Us : sales@edureka.co
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  Slide 2 www.edureka.co/mastering-node-js Objectives Atthe end of the session you will be able to learn: Introduction of Node.js What is the use of NPM Express framework in nodeJS How to create a Web services MongoDB configuration
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  Slide 3 www.edureka.co/mastering-node-js Whatis Node.js ? Node.js is an open source, cross-platform runtime environment for server-side and networking applications Node.js applications are written in JavaScript, and can be run within the Node.js runtime on OS X, Microsoft Windows, Linux, FreeBSD, NonStop and IBM. -- Wikipedia This is based on Google’s V8 JavaScript Engine
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  Slide 4 www.edureka.co/mastering-node-js Whatis Node.js ? (Contd.) Guess What ? » IT’s SINGLE THREADED !! » No worries about : race conditions, deadlocks and other problems that go with multi-threading. » “Almost no function in Node directly performs I/O, so the process never blocks. Because nothing blocks, less-than-expert programmers are able to develop scalable systems.” - (courtesy : nodejs.org) Event Loop Event Queue Thread Pool file system network process other
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  Slide 5 www.edureka.co/mastering-node-jsSlide5Slide 5Slide 5  npm used to stand for Node Package Manager. Now it stands for nothing. Its actually not an acronym. npm is not a Node.js specific tool any more  npm is a registry of reusable modules and packages written by various developers » Yes, you can publish your own npm packages  There are two ways to install npm packages: » Locally: To use and depend on the package from your own module or project » Globally: To use across the system, like a command line tool  Installing a package locally: » The package is easily downloaded by just saying npm install <packagename> » This will create a node_modules directory (if it does not exist yet) and will download the package there » Once installed you can use it in any js file of your project by saying: var obj = require(‘packagename’); Basics of Node.js: npm
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  Slide 6 www.edureka.co/mastering-node-js ExpressFramework  Express framework provides a robust set of features for web and mobile applications.  Creating robust API is quick and easy  It provides a thin layer of fundamental web application feature.  It offers a simple way to get a server up and running.  Features of Express Framework : » Router » Middleware » Template Engines » Error Handling
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  Slide 7 www.edureka.co/mastering-node-jsSlide7  By default Express supports the Jade Template Engine for the HTML Views  What is an JavaScript Template Engine: It is a framework to help bind data to your HTML views  Why do you need one? » Helps you easily bind data from the back end with the HTML view » Helps in bundling HTML code into reusable modules/layouts » Adds basic conditionals & iterations / loops to your HTML. HTML does not support “If -Else” or “for” loops  Many JavaScript Template Engines are available: Jade, Handlebars, Hogan, EJS, etc. Express Framework
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  Slide 8 www.edureka.co/mastering-node-js CreatingRESTful API REST API stands for Representational State Transfer RESTful server dispatches only data for an end point and not a web page. HTTP methods for RESTful Services: » GET » POST » PUT » DELETE
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  Slide 9 www.edureka.co/mastering-node-js DEMO
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  Slide 10 www.edureka.co/mastering-node-js ConnectingMongoDB with Node MongoDB has rapidly grown to become a popular database for web applications and is a perfect fit for Node.JS applications We have lot of third party modules to connect with MongoDB » Mongoose » MongoDB » MongoClient First we have to establish a connection between node app and MongoDB. Once connection is established, fire the query to perform a CURD operation in DB
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  Slide 11 www.edureka.co/mastering-node-js DEMO
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  Slide 12 www.edureka.co/mastering-node-jsSlide12 Job Trends Salaries for Node.js Developers are already in the $60,000 range and much more. From the graph below : The number of jobs are skyrocketing.
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  Slide 13 www.edureka.co/mastering-node-js CourseTopics → Module 6 » Real-time Communication → Module 7 » Forks, Spawns and the Process Module → Module 8 » Testing in Node.js → Module 9 » Node.js in the Tech World → Module 1 » Introduction to Objects in Javascript & Node.js → Module 2 » Modules / Packages → Module 3 » Events & Streams → Module 4 » Network Communication & Web Technology in Node.js → Module 5 » Building a Web Application
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  Slide 14 www.edureka.co/mastering-node-js LIVEOnline Class Class Recording in LMS 24/7 Post Class Support Module Wise Quiz Project Work Verifiable Certificate Course Features
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  Slide 15 www.edureka.co/mastering-node-js Questions
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  Slide 16 www.edureka.co/mastering-node-js