Installing Node.js is very straightforward. In this tutorial you'll learn how to install it using nvm, the Node Version Manager.
In the first part of the Node.js Simplified Tutorial, you've learned what Node.js is and why you should learn it. Since you're reading this, I assume you've decided that Node.js is worth learning. It'll be quite a beautiful journey, I assure you!
If you want to get started right away, download and install the Node.js binaries by visiting the official Node.js Downloads page. However, if you want to do it the right way, keep reading to learn about nvm.
If you want to add more Node.js versions to use for different applications, or to simply keep your Node.js environment organized, I'd recommend installing nvm. Here's how to install it for your specific operating system:
MacOS and Linux
Follow the steps specified in the nvm GitHub repository, or run the following command in your command line Terminal:
curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash
To list the versions of Node.js available to install, run the following command:
This is going to give you a long list of available Node.js versions. I usually choose to install one of the LTS (Long Term Support) versions, which are proven to be stable and have all the latest bug fixes.
For this tutorial, we'll install version 8.11.1 (LTS: Carbon).
nvm install 8.11.1
To check if the chosen node version has been installed properly, run:
This will return the version number of the currently active Node.js binary. If everything is working, it should say
Switching between versions
If you've installed multiple versions using nvm, you can switch between them using the
nvm use command:
nvm use 8.11.1
Getting started ― Hello world!
Now that your Node.js is up and ready to be put to use, we can write and run a small test program, to make sure that you're ready for the next part.
Once you’re done with that, write your first line of Node.js:
// File: index.js console.log("Hello Node.js!");
Let's run the program! To execute your Node.js file, go back to your command line terminal and navigate to the directory in which you've saved the
index.js file. Once you're there, run:
You can see that it will log
Hello Node.js! to the terminal.
Well, that was simple! If you've read around about Node.js, you've surely come across
require() statements, used to include code from other files into your application's entry point (the
Next, head over to Node.js Simplified Tutorial ― Part 3: Requiring Modules where you'll learn about modules, how they work, and why they're so important.
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