node.js

Project Structure                |-------------- models        |                          |-------------- task.js                                    |         |-------------- public        |                          |-------------- data.js        |            |--------------- routes         |                          |-------------- taskroute.js        |         |--------------- views        |                          |-------------- demo.ejs        |         |--------------- app.js Setup The Folder To create a folder, open the command prompt and type cmd mkdir followed by the folder name    # mkdir ajax Change to the folder by typing the cmd cd followed by the folder name  # cd ajax  Setup Node In Folder On the console, type the below command   # npm init -y This will create a package.json file, Which means that node is initialised in the folder. the package.json will look like this  Install Pack

In this article we see how we can enable the searching of data from server in our node application. Setup The Folder  a) Make a new folder using command prompt.Type the following command. mkdir search b) change to the new folder cd search Setup Node In Folder For setting up node we type the following command npm init -y it will initialize the node in our project. And we get a package.json file in our folder. Which  means node is initialized in our folder. Install Packages Now we install the packages which will be required for building the application. npm install express ejs body-parser mongoose. Add New Folder models views models - this will contain our schema of collections(table). views - will contain the ejs pages.   Model Add new file in folder name it data.js Views Add 2 folders a)pages b)partial In partial folder add 2 new files header.ejs and footer.ejs header.ejs footer.ejs In pages add home.ejs file.

Image by Jae Rue from Pixabay Introduction In this article we will be using the bcryptjs javascript library for hashing and compare password.Here we will build a simple api fore register and login.when we will hash the password when user register and then compare that password with hash when they login. What is bcrypt ? bcrypt is a  password hashing function  designed by  Niels Provos  and David Mazières, based on the  Blowfish  cipher, and presented at  USENIX  in 1999.Besides incorporating a  salt  to protect against  rainbow table  attacks, bcrypt is an adaptive function: over time, the iteration count can be increased to make it slower, so it remains resistant to  brute-force search  attacks even with increasing computation power. What is hashing ?  Hashing is a one way function (well, a mapping). It's irreversible, you apply the secure hash algorithm and you cannot get the original string back. The most you can do is to generate what

Introduction   In this article we will see how to use sequelize-cli for creating table in our database.and how can we setup a relationship between two table using foreignKey using sequelize Project Structure Setup The Node Project Open the console and  type the below cmd to make a new directory.         # mkdir seqlcli Then change to that directory by typing below cmd.         # cd seqlcli Setup Node In Project Now  type the below cmd on console and that will generate the package.json file.       # npm init  It will ask you to provide the basic details related to the package.json file have like name,version,author etc. After the file is initialize we can build our node project. The file will have all the metadata related to our project. Install Packages Now we will install the package which are required for building our application. On console type         # npm install express,body-parser,sequelize,mysql2,sequelize-cli So what th

Prerequisites Node MySql What Is Sequelize? As mentioned on the sequelize site, sequelize is a promise-based Node.js ORM for Postgres, MySQL, MariaDB, SQLite, and Microsoft SQL Server. It features solid transaction support, relations, eager and lazy loading, read replication and more. Sequelize follows  SEMVER . It supports Node v6 and above to use ES6 features. Project Structure  |---------  config                |--------- db.js |--------- controllers                |--------- memberController.js |--------- models                |--------- member.js |--------- routes                |-------- members.js |--------- views                 | |------- partials                 |              |------- header.ejs                 |              |------- footer.ejs                 |                 |------ home.ejs                 |------ edit.ejs |---------  app.js |--------- package.json Project Setup Le

Here we will use multer middleware for uploading file . Click the link to know what is  multer . Setup The Project Folder create a new folder using console/terminal. open console/terminal type mkdir followed by the folder name you want to give. change to that folder by typing cd  folder name. Setup Node For The Project now type npm init on console/terminal. the  npm init  will create a  package.json  file.But we can create it manually too. just open the folder and  add a new file  and name it  package.json  and then we can structure it the same way as its been structured when using  npm init . the package.json will look like this. now we will install packages for our project using npm install followed by package names we want to install. the following packages will be installed express ejs body-parser multer mongoose . this will generate a folder name node_modules which will contain all the node packages. after the pac