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Is Nodejs required for Angular 2 or Angular

NodeJS is a server side backend which makes it important and not important to AngularJS.

AngularJS does not require a backend, but it does require hosting. NodeJS, IIS, Apache, and others can host websites. When an Angular site needs access to your data, then you get into server side technologies. While AngularJS apps do not need NodeJS at runtime, much of the tooling and scripting that is often used for AngularJS development is written with NodeJS.

Node.js is an open source JS framework that

· Helps in the execution of JavaScript code from server-side.

· Acts as a storehouse where you can get any JS framework by using Node Package Manager(NPM).

· Uses chrome Javascript engine to execute Javascript outside the browser for creating desktop and server-based applications.

· NPM is used for copying all the dependencies and packages to the local directory.

Reasons why there is a need for nodeJS in Angular:

· Angular is created in Typescript, which isn’t supported by browsers. For compiling them into JavaScript, nodeJS is required.

· Most of the Angular libraries are assigned in the form of different NPM packages. NPM(Node Package Manager) relies more on Node.JS.

· NPM is responsible for minimizing the size of the Javascript files which basically helps in reducing application’s size.

· Angular works on the client side, while for processing on the server side you will require NodeJS.

· NodeJS works as an intermediate for hosting in Angular and transferring data to the server side.

Since NodeJS and AngularJS operate by the same language that is Javascript, code sharing is possible. You can create a generic function that takes an input and spits out some data, wrap into a module and use it either in AngularJS or NodeJS as per needs.

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