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.
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- 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: Introduction of Node.js What is the use of NPM Express framework in nodeJS How to create a Web services MongoDB configuration
- 3. Slide 3 www.edureka.co/mastering-node-js What is 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
- 4. Slide 4 www.edureka.co/mastering-node-js What is 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
- 5. Slide 5 www.edureka.co/mastering-node-jsSlide 5Slide 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
- 6. Slide 6 www.edureka.co/mastering-node-js Express Framework 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
- 7. Slide 7 www.edureka.co/mastering-node-jsSlide 7 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
- 8. Slide 8 www.edureka.co/mastering-node-js Creating RESTful 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
- 10. Slide 10 www.edureka.co/mastering-node-js Connecting MongoDB 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
- 12. Slide 12 www.edureka.co/mastering-node-jsSlide 12 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.
- 13. Slide 13 www.edureka.co/mastering-node-js Course Topics → 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
- 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