How do i install npm

To upgrade, download the installer and run it. The setup wizard will overwrite the old version, and replace it with the new version. Instead, it interprets commands that you write. To test your new Node. It will look like nothing has happened. In reality, your script is running in the background.

You may see a Windows Defender notice about allowing traffic — for now, click Allow. Right now, your computer is acting like a server. Any other computer that tries to access your system on port will see the Hello World notice. The system will switch back to a command prompt. You can close this window whenever you are ready. You should now be able to install both the Node. How to Install Node. Introduction Node.

Was this article helpful? Dejan Tucakov. He is dedicated to simplifying complex notions and providing meaningful insight into data center and cloud technology. As you dive deeper, you'll begin to learn some variations on installing modules, but here's the very core of what you need to know to install a standalone module into the current directory:.

For example, if you want to install Express the most used and most well known Node. In addition to triggering an install of a single module, you can actually trigger the installation of all modules that are listed as dependencies and devDependencies in the package. To do so, you'll simply need to run the command itself:. Once you run this, npm will begin the installation process of all of the current project's dependencies.

As an aside, one thing to note is that there's an alias for npm install that you may see in the wild when working with modules from the ecosystem. The alias is npm i , where i takes the place of install. This seemingly minor alias is a small gotcha for beginners - including myself, several times when I was learning - to the Node. As with npm init , the npm install command has a flag or two that you'll find useful in your workflow - it'll save you time and effort with regard to your project's package.

When you're running npm install to install a module, you can add the optional flag --save to the command. This flag will add the module as a dependency of your project to the project's package. There's a flag that is nearly an exact duplicate, in terms of functionality, of the --save flag when installing a module: --save-dev. There are a few a key differences between the two - instead of saving the module being installed and added to package. The semantic difference here is that dependencies are for use in production - whatever that would entail for your project.

On the other hand, devDependencies are a collection of the dependencies that are used in development of your application - the modules that you use to build it, but don't need to use when it's running. This could include things like testing tools, a local server to speed up your development, and more. The final, and most common, flag for npm install that you should are the flags to install a module globally on your system.

Global modules can be extremely useful - there are tons tools, utilities, and more for both development and general usage that you can install globally to use. To install a module from npm globally, you'll simply need to use the --global flag when running the install command to have the module install globally, rather than locally to the current directory. Note: One caveat with global modules is that, by default, npm will install them to a system directory, not a local one.

With this as the default, you'll need to authenticate as a privileged user on your system to install global modules. As a best practice, you should change the default installation location from a system directory to a user directory.

If you'd like to learn to do this, take a peek at the seventh tip in our npm tricks article! If you want to keep learning about npm and all its facets, I've got a few awesome things for you. A bit ago, we shared a few npm tricks to knock your wombat socks off. Even better, we wrote a follow-up with even more npm tricks! If you're using Linux or another operating system, use one of the following installers:. Or see this page to install npm for Linux in the way many Linux developers prefer.

For more information on installing Node. Skip to content. About npm. Getting started Setting up your npm user account. Managing your npm user account.