Create Restful Web Application With Node.js Express Framework
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The document provides an overview of a Node.js course offered by Edureka, covering topics such as Node.js fundamentals, npm, the Express framework, RESTful API creation, and MongoDB integration. It highlights key features and objectives of the course, aiming to equip learners with skills for building robust web applications. The document also mentions job trends and potential salaries for Node.js developers.
Create Restful Web Application With Node.js Express Framework
- 1. www.edureka.co/mastering-node-js View Mastering Node.js course 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 : [email protected]
- 2. Slide 2 www.edureka.co/mastering-node-js Objectives At the end of the session you will be able to learn: ďŽIntroduction of Node.js ďŽWhat is the use of NPM ďŽExpress framework in nodeJS ďŽHow to create a Web services ďŽMongoDB configuration
- 3. Slide 3 www.edureka.co/mastering-node-js What is Node.js ? ďŽNode.js is an open source, cross-platform runtime environment for server-side and networking applications ďŽNode.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 ďŽThis is based on Googleâs V8 JavaScript Engine
- 4. Slide 4 www.edureka.co/mastering-node-js What is Node.js ? (Contd.) Guess What ? Âť ITâs SINGLE THREADED !! Âť No worries about : race conditions, deadlocks and other problems that go with multi-threading. Âť âAlmost 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.â - (courtesy : nodejs.org) Event Loop Event Queue Thread Pool file system network process other
- 5. Slide 5 www.edureka.co/mastering-node-jsSlide 5Slide 5Slide 5 ďŽ 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 ďŽ npm is a registry of reusable modules and packages written by various developers Âť Yes, you can publish your own npm packages ďŽ There are two ways to install npm packages: Âť Locally: To use and depend on the package from your own module or project Âť Globally: To use across the system, like a command line tool ďŽ Installing a package locally: Âť The package is easily downloaded by just saying npm install <packagename> Âť This will create a node_modules directory (if it does not exist yet) and will download the package there Âť Once installed you can use it in any js file of your project by saying: var obj = require(âpackagenameâ); Basics of Node.js: npm
- 6. Slide 6 www.edureka.co/mastering-node-js Express Framework ďŽ Express framework provides a robust set of features for web and mobile applications. ďŽ Creating robust API is quick and easy ďŽ It provides a thin layer of fundamental web application feature. ďŽ It offers a simple way to get a server up and running. ďŽ Features of Express Framework : Âť Router Âť Middleware Âť Template Engines Âť Error Handling
- 7. Slide 7 www.edureka.co/mastering-node-jsSlide 7 ďŽ By default Express supports the Jade Template Engine for the HTML Views ďŽ What is an JavaScript Template Engine: It is a framework to help bind data to your HTML views ďŽ Why do you need one? Âť Helps you easily bind data from the back end with the HTML view Âť Helps in bundling HTML code into reusable modules/layouts Âť Adds basic conditionals & iterations / loops to your HTML. HTML does not support âIf -Elseâ or âforâ loops ďŽ Many JavaScript Template Engines are available: Jade, Handlebars, Hogan, EJS, etc. Express Framework
- 8. Slide 8 www.edureka.co/mastering-node-js Creating RESTful API ďŽREST API stands for Representational State Transfer ďŽRESTful server dispatches only data for an end point and not a web page. ďŽHTTP methods for RESTful Services: Âť GET Âť POST Âť PUT Âť DELETE
- 10. Slide 10 www.edureka.co/mastering-node-js Connecting MongoDB with Node ďŽMongoDB has rapidly grown to become a popular database for web applications and is a perfect fit for Node.JS applications ďŽWe have lot of third party modules to connect with MongoDB Âť Mongoose Âť MongoDB Âť MongoClient ďŽFirst we have to establish a connection between node app and MongoDB. ďŽOnce connection is established, fire the query to perform a CURD operation in DB
- 12. Slide 12 www.edureka.co/mastering-node-jsSlide 12 Job Trends ďŽSalaries for Node.js Developers are already in the $60,000 range and much more. From the graph below : The number of jobs are skyrocketing.
- 13. Slide 13 www.edureka.co/mastering-node-js Course Topics â Module 6 Âť Real-time Communication â Module 7 Âť Forks, Spawns and the Process Module â Module 8 Âť Testing in Node.js â Module 9 Âť Node.js in the Tech World â Module 1 Âť Introduction to Objects in Javascript & Node.js â Module 2 Âť Modules / Packages â Module 3 Âť Events & Streams â Module 4 Âť Network Communication & Web Technology in Node.js â Module 5 Âť Building a Web Application
- 14. Slide 14 www.edureka.co/mastering-node-js LIVE Online Class Class Recording in LMS 24/7 Post Class Support Module Wise Quiz Project Work Verifiable Certificate Course Features