Vinu's Blog

Routers can be created according to REST principles such as get, post, put, delete etc..  GET  =>  get request to r etrieve data from database or data store(An array). POST  =>  post request to insert   data to database or data store(An array). PUT  =>  put request to update the data in database or data store(An array). DELETE  =>  delete request to delete data in database or data store(An array). Creation of routers. In this scenario I have created a schema call users using mongoose.  using mongoose the created users model is retrieved. GET request  using the keyword  " get"   the data can be retrieved.  retrieving all the users in the database. By giving a parameter in the url we can get information according to the given subject.  user is retrieved according to the _id. POST request  using the keyword  "pos t"   the...

Express is a very popular framework that is used in NodeJs. Express is build upon NodeJs and also it provides a lot of tools that makes node more easy to use by adding more functionalities. Most of the needed functionalities are handled by express which helps the users to only focus on the business logic and to easily setup routes and to render the things on screen in a fast, optimized and a secured manner. How to install ExpressJS? Express can be easily installed by the command  " npm i express"  . Installation of ExpressJs package.json file will be updated once the installation is successful. How to import ExpressJS? To import the installed express module we can use the command  " require("express") " . Accessing the imported express module. express can be accessed as given below using the given commands. Firstly a constant called app is created. And then using this give constant app ...