Node.js® is a JavaScript-based environment which you can use to create web-servers and networked applications. You can also use it to perform helpful tasks on your computer such as concatenating and minifying JavaScript files and compiling Sass files into CSS.
NPM is a “package manager” that makes installing Node “packages” fast and easy. A package is just a code library that extends Node by adding useful features. For example, the “request” package simplifies the process of making HTTP requests so you can easily get web resources from other sites.
You should have some familiarity with an application that lets you issue command line instructions. For example, the Windows Command Prompt, PowerShell, Cygwin, or the Git shell (which you get when you install Github for Windows).
Installation Overview
Installing Node.js® and NPM is pretty straightforward using the installer package available from the Node.js web site.
Run the installer (the .msi file you downloaded in the previous step.)
Follow the prompts in the installer (Accept the license agreement, click the NEXT button a bunch of times and accept the default installation settings).
Restart your computer. You won’t be able to run Node.js until you restart your computer.
Test it!
Make sure you have Node and NPM installed by running simple commands to see what version of each is installed:
Test Node. To see if Node is installed, open the Windows Command Prompt, Powershell or a similar command line tool, and type node -v. This should print the version number so you’ll see something like this v0.10.35.
Test NPM. To see if NPM is installed, type npm -v in Terminal. This should print the version number so you’ll see something like this 1.4.28
Create a test file and run it. A simple way to test that node.js works is to create a simple JavaScript file: name it hello.js, and just add the code console.log('Node is installed!');. To run the code simply open your command line program, navigate to the folder where you save the file and type node hello.js. This will start Node.js and run the code in the hello.js file. You should see the output Node is installed!.
How to Update Node and NPM
New versions of Node and NPM come out frequently. To install the updates, just download the installer from the Nodejs.org site and run it again. The new version of Node.js and NPM will replace the older versions.
How to Uninstall Node and NPM
You uninstall Node.js and NPM the same as you would most all Windows software:
We strongly recommend using a Node version manager like nvm to install Node.js and npm. We do not recommend using a Node installer, since the Node installation process installs npm in a directory with local permissions and can cause permissions errors when you run npm packages globally.
To see if Node is installed, open the Windows Command Prompt, Powershell or a similar command line tool, and type node -v . This should print the version number so you'll see something like this v0. 10.35 .
On most systems, this is /usr/local . On Windows, it's %AppData%\npm . On Unix systems, it's one level up, since node is typically installed at {prefix}/bin/node rather than {prefix}/node.exe .
Visit the official node. js site https://nodejs.org/en/download/ and click on Windows installer to download the necessary software in your system. The installer contains the NPM package. Based on the system you want to install, choose 32-bit installer or 64-installer and proceed.
In a web browser, navigate to the Node.js Downloads page. Click the Windows Installer button to download the latest stable version with long-term support (LTS). The installer also includes the NPM package manager. The file is saved in the Downloads folder by default.
nvm allows for easy installation and management of different Node.js versions without conflicting with each other. It is particularly helpful when you need to work with projects that depend on different Node. js versions, ensuring compatibility across different environments.
You should run it in your project root folder, or the folder above your node_modules folder as sometimes the structure can differentiate between projects. But in general: the root folder of your project, as long as it is one folder above your node_modules.
The Node can be installed in multiple ways on a computer. The approach used by you depends on the existing development environment in the system. There are different package installers for different environments.
NPM is included with Node.js installation. After you install Node. js, verify NPM installation by writing the following command in terminal or command prompt.
Introduction: My name is Annamae Dooley, I am a witty, quaint, lovely, clever, rich, sparkling, powerful person who loves writing and wants to share my knowledge and understanding with you.
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