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Installing Node.js via Node Version Manager on a Mac

From: Node.js Essential Training

Video: Installing Node.js via Node Version Manager on a Mac

NVM is a multiplatform tool for installing Node. Once it's installed on a Mac, switching between versions is easy. Let's install NVM now and then use it to install Node. I'm at the homepage for NVM on Github. Down in the install script section, it says it requires Git. I already have Git installed on this computer. But if you don't, you can watch Git Essential Training. Specifically watch the Installing Git on a Mac video. Installation also requires a C++ compiler.

Installing Node.js via Node Version Manager on a Mac

NVM is a multiplatform tool for installing Node. Once it's installed on a Mac, switching between versions is easy. Let's install NVM now and then use it to install Node. I'm at the homepage for NVM on Github. Down in the install script section, it says it requires Git. I already have Git installed on this computer. But if you don't, you can watch Git Essential Training. Specifically watch the Installing Git on a Mac video. Installation also requires a C++ compiler.

If you don't already have the C++ compiler installed, watch Xcode 4 Essential Training, specifically the Installing Xcode video. Make sure you get the command line tools. Now let's install NVM. I'm going to copy the install script. And then I'm going to go to terminal. I'm going to paste that command in. This command is going to download the install script from GitHub and then run it. It's now telling me to close and reopen my terminal to start using NVM. So I'm going to do that. I'm going to close terminal entirely. And now I'm going to re-open it.

So now let's type nvm. Now we can use nvm to install Node. To do that type nvm install, and then type the version number of Node that you want to install. In this case, I'm going to install 0.10. And, you don't have to add the final segment there, it will automatically install the latest in that series if you just omit it. Now, I'm going to press return. So, it's telling me that I'm now using node version 0.10.18. Now, if I type node, it pulls up a command prompt.

I'm going to press ctrl + c and I'm going to press it again to get out. And now before I close this terminal window, I want to make sure that nvm always uses this version of Node. So to do that, I'm going to type nvm alias then default And then, 0.10. So now I'm going to close out this window and I'm going to open Terminal again, and I'm just going to type node. So node is still available. And if I do node --version it's going to show node v0.10.18 Now let's say I wanted to use node 0.8 to test something very quickly. To do that I can use nvm again, so I'm going to type nvm install and then 0.8.

So now it's telling me I'm using node 0.8.25. And if I do node then -- version, it's going to show that version instead. And I can pop into the node terminal. And then I can press Ctrl+c and again to quit. And I'm back to my command prompt. So let's see what happens when I close out Terminal and open it again. If I type in node and then --version, it's gone back to 0.10.18. So let's say I wanted to use version 0.8 again.

To do that I'm going to type nvm use 0.8. I use the use command this time because I've already installed 0.8. And, then if I want to switch back to 10, I can type nvm use and then 0.10. Nvm gives you the flexibility of selecting the exact version of node you want to use. As well as the ability to easily switch versions. After making sure a compiler and get are available, nvm can be installed with one line of commands.

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This video is part of

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Node.js Essential Training

52 video lessons · 13249 viewers

Joseph LeBlanc
Author

 
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  1. 3m 9s
    1. Welcome
      42s
    2. What you should know before watching this course
      57s
    3. Using the exercise files
      47s
    4. Using the challenges
      43s
  2. 18m 50s
    1. Why use Node.js?
      2m 1s
    2. Choosing a Node.js installation process
      4m 56s
    3. Installing Node.js on the Mac
      2m 5s
    4. Installing Node.js on Windows
      1m 43s
    5. Installing Node.js via Node Version Manager on Ubuntu Linux
      4m 45s
    6. Installing Node.js via Node Version Manager on a Mac
      3m 20s
  3. 13m 54s
    1. Exploring language additions to the V8 JavaScript engine
      3m 38s
    2. Understanding require() and modules
      6m 39s
    3. Understanding callback execution in the event loop
      3m 37s
  4. 12m 23s
    1. Initializing Node.js projects
      2m 37s
    2. Finding an NPM
      3m 30s
    3. Maintaining projects using the npm command
      6m 16s
  5. 21m 4s
    1. Creating modules with getters and setters
      6m 33s
    2. Understanding module caching and scopes
      6m 15s
    3. Implementing JavaScript creational patterns
      5m 8s
    4. Challenge: Leveraging module caching
      55s
    5. Solution: Leveraging module caching
      2m 13s
  6. 32m 27s
    1. Starting Express applications
      3m 42s
    2. Handling GET requests returning JSON
      3m 26s
    3. Navigating large datasets using request variables in routes
      5m 4s
    4. Modifying data through PUT requests
      4m 32s
    5. Supplying middleware to modify HTTP response headers
      4m 37s
    6. Generating HTML views in Jade
      8m 9s
    7. Challenge: List all records as JSON
      37s
    8. Solution: List all records as JSON
      2m 20s
  7. 25m 37s
    1. Evaluating unit testing methodologies
      3m 8s
    2. Isolating existing code for testing
      6m 47s
    3. Supplying helpers for test data
      2m 35s
    4. Writing unit tests with Mocha
      6m 5s
    5. Simulating HTTP requests with SuperTest
      7m 2s
  8. 28m 45s
    1. Connecting to MongoDB via Mongoose
      4m 16s
    2. Defining schemas for collections in Mongoose
      3m 47s
    3. Querying MongoDB collections
      5m 32s
    4. Persisting Express sessions through MongoDB and mongo-connect
      7m 6s
    5. Logging in to Express applications using Passport
      8m 4s
  9. 21m 47s
    1. Controlling the built-in REPL
      4m 18s
    2. Constructing a custom REPL
      5m 40s
    3. Receiving command-line arguments with Optimist
      6m 14s
    4. Building command-line tools
      3m 35s
    5. Challenge: Launch a custom REPL from a command
      41s
    6. Solution: Launch a custom REPL from a command
      1m 19s
  10. 15m 46s
    1. Emitting events and attaching listeners
      5m 32s
    2. Streaming chunked data through readable streams
      2m 33s
    3. Controlling readable streams
      1m 52s
    4. Piping readable data into writable streams
      2m 10s
    5. Handling duplex streams over TCP
      3m 39s
  11. 4m 6s
    1. Deploying projects to cloud hosting services
      2m 36s
    2. Finding Node.js resources
      1m 30s

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