How to switch nodejs versions at will?

SongGe is currently recording TienChin Project video ～ use Spring Boot+Vue3 Technology stack , It will involve all kinds of fun technologies , Little friends, come and do a super high completion rate with brother song 90% Project , Poke here -->TienChin Here comes the supporting video of the project .

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Let's have a simple one on Friday , Take it easy ~

My friends know that brother song has been recording recently TienChin Video project , The front end uses Vue3, This is for RuoYi-Vue3, This scaffold is used in the front end yarn, And also used some plug-ins , Lead to Node Version must be >=14.

Preparing to update my Node When , Suddenly I remembered that there was my personal website on my computer www.javaboy.org, This website I use Hexo stay 2019 Built in , Used at that time Hexo The version of is also relatively old , If you use a higher version of NodeJS Will lead to my Hexo There's a problem with the operation （ This pit has been stepped on once before ）, If you reinstall the latest version Hexo It is estimated that there is no problem , But I made a lot of customization for my personal website , Not just modify Hexo Configuration of , I even changed a lot of code myself , So if you reinstall Hexo Also bother , There are many things to change , It's too much trouble .

reasoning , If you can install several different on your computer NodeJS The version is good , And the installation should be convenient without too much trouble （ Otherwise, I might as well toss my Hexo）, Then take a look NVM.

As Java The engineer , I think this NVM It's very convenient , But the professional front-end engineer saw , You may feel a little naive haha .

1. NVM

NVM yes Mac Under the node Management tools , When I first saw this tool , I think of it. Ruby Medium rvm（ Before that 《Spring Boot+Vue Full stack development practice 》 In a Book , In order to teach everyone to build Redis colony , I have to teach you to use rvm install Ruby）.

If management is needed Windows Under the node, Official recommendation nvmw or nvm-windows, however ,nvm-windows Not at all nvm A simple transplant of , They have nothing to do with it .

In most cases ,Windows Under the nvm and mac Inside nvm There is no big difference in use , Basically consistent , There will be some different commands , In this article, I will sort out with you .

2. install

Remember to install what you installed before NodeJS Delete the , Otherwise, there may be conflicts .

Windows It's easy to say , The control panel finds the corresponding file and uninstalls it directly ,Mac Then execute the following command to delete ：

sudo npm uninstall npm -g

sudo rm -rf /usr/local/lib/node /usr/local/lib/node_modules /var/db/receipts/org.nodejs.*

sudo rm -rf /usr/local/include/node /Users/$USER/.npm

sudo rm /usr/local/bin/node

sudo rm /usr/local/share/man/man1/node.1

sudo rm /usr/local/lib/dtrace/node.d

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Let's do it in one meal , Then execute the following command , If the corresponding command cannot be found , That means the deletion is successful ：

node -v
// -bash: /usr/local/bin/node: No such file or directory

npm -v
// -bash: /usr/local/bin/npm: No such file or directory

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Windows There's one on exe file , Double click the installation directly , There's nothing to say about this .

Mac perhaps Linux On, we can directly install online , Very convenient ：

have access to curl Command to install ：

curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

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You can also use wget Command to install ：

wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash

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After execution , adopt nvm -v Command to check whether the installation is successful ：

3. Use

Using commands is also relatively easy . List a common command for the partners ：

Specify the current Node edition ：

$ nvm use 16
Now using node v16.9.1 (npm v7.21.1)
$ node -v
v16.9.1
$ nvm use 14
Now using node v14.18.0 (npm v6.14.15)
$ node -v
v14.18.0

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To install a Node edition ：

$ nvm install 12
Now using node v12.22.6 (npm v6.14.5)
$ node -v
v12.22.6

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View the currently installed Node edition ：

nvm ls

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See what's available Node edition ：

# Mac
nvm ls-remote
# Windows
nvm list available

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4. Summary

All right. , If the partners also have to use different Node Version of trouble , Then try this ～