Can node be downgraded?

The node version cannot be downgraded directly, but you can uninstall the higher version and use the nvm version controller to reinstall the lower version of the node to downgrade. Downgrade method: 1. Use "npm instlal -g n" to globally install the n module; 2. Use "n rm version" to uninstall the specified version; 3. After installing nvm, use "nvm use version" to install the specified version.

The operating environment of this article: Windows 10 system, nodejs version 16, Dell G3 computer.

Can node be downgraded?

The node version can be directly upgraded to a higher version, but it cannot be downgraded to a lower version

Some projects require a higher version and some require a lower version , so you can use the version controller nvm

The example is as follows:

1. Install the npm plug-in n and manage the node version through the n module

1 , Globally install n module

npm instlal -g n

2. Install the current stable version

n stable或者sudo n stable

3. Install the latest version

n latest或者sudo n latest

4. Install the specified version of node

n v8.16.0

5. Uninstall the specified node version

n rm v8.16.0

2. Use nvm to manage the node version

1. Install nvm

brew install nvm

2. Use nvm to install the node version

Install the latest version

nvm isntall node

Install the specified version

nvm install 8.16.0

3. View all versions

nvm ls

4. Switch node version

Use the latest version

nvm use node

Use the specified version

nvm use 10.16.2

Knowledge expansion

Some projects require a higher version and some require a lower version, so you can use the version controller nvm ( windows system)

1. First clear and uninstall the local node

cmd input where node to view the node storage location, clear all files in this folder

Control Panel->Uninstall the program->node uninstall

2. Download nvm:Releases · coreybutler/nvm-windows · GitHub

Download nvm-setup.zip

Double-click to install and select the location where nvm and node downloads are stored. The first path is the saving path of nvm, and the second is the path where node is downloaded and saved. It is best not to put it on the c drive

3. Check whether the nvm installation is successful: nvm v

4. Next, install the node version: nvm ls available to view the version. In addition to the following, the rest can also be installed

## 5. Install node: nvm install 12.17.0 (installation fixed version), you can install multiple versions

6. Select the node version: nvm use 12.17.0 You can only select one node version, and the other versions will not be used

This step may Garbled characters or status1 errors appear. At this time, you need to exit cmd and run cmd with administrator rights. Then execute the use command

7. Check whether node is installed successfully: node -v and npm -v

8 , nvm ls can view all installed versions

Recommended learning: "

nodejs video tutorial"

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