After creating the directory you will need to change into that directory. For this demo I am creating a directory called node-demo. To get started I would recommend creating a new database that will contain our application. We will be using an API to define when we add data to our database and when we read from the database. Restful APIĪ RESTful API is an application program interface that uses HTTP requests to GET, PUT, POST and DELETE data. In this example you will be providing examples of Creating new data into the database and then Reading the data from the database. It is used to describe the process of having your data persisted into a database.

CRUDĬRUD is an acronym that means Create, Read, Update and Delete. After that we will start building our example. It will also show all items that have been entered into the database.īefore we get started I will describe a few terms that you will frequently hear when creating a MEAN stack application. We will be creating a very simple Node application, that will allow users to input data that they want to store in a MongoDB database. In this tutorial I will show you how to use Express.js, Node.js and MongoDB.js.

Let is also used to declare variables(new way)Ĭonst is used to declare const values.The MEAN stack is used to describe development using MongoDB, Express.js, Angular.jS and Node.js. Var is used to declare variables(old way of declaring variables) Executable in both browser and server which has Javascript engines like V8(chrome), SpiderMonkey(Firefox) etc.

Embedded along with HTML and makes web pages alive.

Javascript is required to design the behaviour of the web pages. Javascript(JS) is a object-oriented programming language which adhere to ECMA Script Standards. The editor shows sample boilerplate code when you choose language as Javascript and start coding. Getting started with the OneCompiler's Javascript editor is easy and fast. It's one of the robust, feature-rich online compilers for Javascript language. Write, Run & Share Javascript code online using OneCompiler's JS online compiler for free.

Program to write javascript