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Showing posts with the label Web Development

Create a Mobile app using Angular and Cordova

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This will be a step by step guide for converting an angular project to an android application by using Cordova (The process will be quiet similar for creating IOS apps). Before we start converting our application we need to install Cordova, Java SDK, Apache Ant, Gradle, and Android SDK for running our android application. If you have already done all the required setup you can skip this section. Note:  You don’t need to enter ‘$’ in front of every command, it indicates that you have to enter the command in your terminal. Installing Cordova: You will need NPM(Node Package Manager) to install Cordova Package. $ sudo apt-get update $ sudo apt-get install curl $ curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash - $ sudo apt-get install nodejs $ nodejs -v $ sudo apt-get install npm $ npm -v 2. You also need GIT, as it is used by Cordova behind the scenes. $ sudo apt-get install git $ git --version 3. Installing Cordova $ sudo npm instal...
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Web Services in Python

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Web Services in Python Table of content Web Service REST and SOAP (Definition,Difference,usage) Why we use Web service GET and POST (Definition,Difference) A sample Python Flask Application What is Postman JSON XML Image Video Streaming Web Services In programming, generally refers to a web page, that can be called from an application (be it another web page, or desktop app), and the caller will pass in data to it, or receive data from it.It’s basically like a ‘method’ or ‘function’ in a normal programming language; except you’re calling it over the internet Definations A Web service is a software system designed to support interoperable machine-to-machine interaction over a network. The term  Web services  describes a standardized way of integrating Web-based Application using the XML, SOAP, Wsdl and UDDIopen Standard over an Internet protocol Back. What is REST Everything in REST is considered as a resource. Every resource is i...
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How to Secure Session Management in Node

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In a web application, data is transferred from a browser to a server over HTTP. In modern applications, we use the HTTPS protocol, which is HTTP over TLS/SSL (secure connection), to transfer data securely. Looking at common use cases, we often encounter situations where we need to retain user state and information. However, HTTP is a stateless protocol. Sessions are used to store user information between HTTP requests. We can use sessions to store users' settings like when not authenticated. Post authentication sessions are used to identify authenticated users. Sessions fulfill an important role between user authentication and authorization. Exploring Sessions Traditionally, sessions are identifiers sent from the server and stored on the client-side. On the next request, the client sends the session token to the server. Using the identifier, the server can associate a request with a user. Session identifiers can be stored in cookies, localStorage, and sessionStorage. Session identi...
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Angular 9 - User Registration and Login Example & Tutorial

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In this tutorial we'll go through an example of how to build a simple user registration, login and user management (CRUD) application with Angular 9. The project is available on GitHub at  https://github.com/cornflourblue/angular-9-registration-login-example . The Angular CLI was used to generate the base project structure with the  ng new <project name>  command, the CLI is also used to build and serve the application. For more info about the Angular CLI see  https://angular.io/cli . Styling of the example app is all done with Bootstrap 4.4 CSS, for more info about Bootstrap see  https://getbootstrap.com/docs/4.4/getting-started/introduction/ . Here it is in action:   (See on StackBlitz at  https://stackblitz.com/edit/angular-9-registration-login-example ) Running the Angular 9 Login Tutorial Example Locally Install NodeJS and NPM from  https://nodejs.org . Download or clone the Angular project source code from  https:...
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How to download a file using command prompt (cmd) Windows?

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If you’re like most Internet users, you download various types of files now and then. You either download these files with your web browser or some download manager software. Have you ever considered downloading files using the command prompt i.e. CMD? If not, we recommend you to try it. It’s quite interesting apart from being very useful as well. In this article, we’ll show you how to download a file using command prompt aka CMD. How to download a file using command prompt?   There are several useful commands for the Command Prompt and one of them is  bitsadmin . Though bitsadmin has several uses, here we shall limit this article to its role in downloading files only. If you want to read the details about bitsadmin syntax, continue reading this section. Otherwise, you can scroll down to the next section –  Downloading a file .   The syntax of bitsadmin is : BITSADMIN [/RAWRETURN] [/WRAP | /NOWRAP] command   As you know, the parts of the syntax inside ...
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