Node. js RESTful APIWhat is REST architecture REST stands for REpresentational State Transfer. REST is web standards based architecture and uses HTTP Protocol. Huawei Installer Download more. It revolves around resource where every component is a resource and a resource is accessed by a common interface using HTTP standard methods. REST was first introduced by Roy Fielding in 2. A REST Server simply provides access to resources and REST client accesses and modifies the resources using HTTP protocol. Here each resource is identified by URIs global IDs. REST uses various representation to represent a resource like text, JSON, XML but JSON is the most popular one. HTTP methods. Following four HTTP methods are commonly used in REST based architecture. GET This is used to provide a read only access to a resource. PUT This is used to create a new resource. DELETE This is used to remove a resource. POST This is used to update a existing resource or create a new resource. I dont fully get what Node. Maybe its because I am mainly a web based business application developer. What is it and what is the use of it My. MSDN Flash Archive. MSDN Flash delivers critical developer news to you in one informationdense, compact newsletter. Stay up to date with the latest development news. Restful Web Services With Node.Js And Express' title='Restful Web Services With Node.Js And Express' />RESTful Web Services. A web service is a collection of open protocols and standards used for exchanging data between applications or systems. Software applications written in various programming languages and running on various platforms can use web services to exchange data over computer networks like the Internet in a manner similar to inter process communication on a single computer. This interoperability e. Restful Web Services With Node.Js And Express' title='Restful Web Services With Node.Js And Express' />Java and Python, or Windows and Linux applications is due to the use of open standards. Web services based on REST Architecture are known as RESTful web services. These webservices uses HTTP methods to implement the concept of REST architecture. Restful Web Services With Node.js And Expression' title='Restful Web Services With Node.js And Expression' />A RESTful web service usually defines a URI, Uniform Resource Identifier a service, which provides resource representation such as JSON and set of HTTP Methods. Creating RESTful for A Library. Consider we have a JSON based database of users having the following users in a file users. Based on this information we are going to provide following RESTful APIs. Gz4cOWn8_c4/hqdefault.jpg' alt='Restful Web Services With Node.Js And Express' title='Restful Web Services With Node.Js And Express' />New to Microsoft Azure Get a basic overview of the services it offers with examples of how they are useful. S. N. URIHTTP Method. POST body. Result. Users. GETempty. Show list of all the users. User. POSTJSON String. Add details of new user. User. DELETEJSON String. Delete an existing user. GETempty. Show details of a user. Im keeping most of the part of all the examples in the form of hard coding assuming you already know how to pass values from front end using Ajax or simple form data and how to process them using express Request object. List Users. Lets implement our first RESTful API list. Users using the following code in a server. Users, function req, res. File dirname users. Example app listening at http s s, host, port. Now try to access defined API using URL http 1. Users and HTTP Method GET on local machine using any REST client. This should produce following result You can change given IP address when you will put the solution in production environment. Add User. Following API will show you how to add new user in the list. Following is the detail of the new user. You can accept the same input in the form of JSON using Ajax call but for teaching point of view, we are making it hard coded here. Following is the add. User API to a new user in the database server. User, function req, res. First read existing users. File dirname users. Windows Vista Version Differences there. JSON. parse data. JSON. stringifydata. Example app listening at http s s, host, port. Now try to access defined API using URL http 1. User and HTTP Method POST on local machine using any REST client. This should produce following result. Show Detail. Now we will implement an API which will be called using user ID and it will display the detail of the corresponding user. First read existing users. File dirname users. JSON. parse data. JSON. stringifyuser. Example app listening at http s s, host, port. Now try to access defined API using URL http 1. HTTP Method GET on local machine using any REST client. This should produce following result. Delete User. This API is very similar to add. User API where we receive input data through req. ID we delete that user from the database. To keep our program simple we assume we are going to delete user with ID 2. User, function req, res. First read existing users. File dirname users. JSON. parse data. JSON. stringifydata. Example app listening at http s s, host, port. Now try to access defined API using URL http 1. User and HTTP Method DELETE on local machine using any REST client. This should produce following result.