Node.js NPM (Node Package Manager) is a package manager for the JavaScript programming language. It is the default package manager for the JavaScript runtime environment Node.js. NPM allows developers to easily share and reuse code, as well as manage dependencies in their projects.
To use NPM, you must first have Node.js installed on your computer. Once Node.js is installed, you can access NPM by using the command line.
The first step in using NPM is to create a package.json file. This file contains information about your project, including the packages you will be using. To create a package.json file, you can use the command "npm init" in the command line. This will prompt you to enter information about your project, such as the name and version.
Once you have a package.json file, you can install packages using the command "npm install <package name>". For example, if you wanted to install the popular package "lodash", you would use the command "npm install lodash". This will install the package and add it to your package.json file as a dependency.
You can also update and delete packages using NPM. To update a package, you can use the command "npm update <package name>". To delete a package, you can use the command "npm uninstall <package name>".
In addition to managing packages, NPM also allows you to run scripts. These scripts can be defined in your package.json file and can be run using the command "npm run <script name>". For example, if you had a script named "build" in your package.json file, you could run it using the command "npm run build".
Overall, NPM is a powerful tool for managing packages and dependencies in Node.js projects. It allows developers to easily share and reuse code, as well as manage dependencies in their projects. With NPM, developers can stay up-to-date with the latest packages and easily manage the packages they use in their projects.