一、查看当前node.js版本

node -v

二、卸载当前node.js

# 这里是卸载npm的sudo npm uninstall npm -g# 这里是用来删除node创建的各种文件夹sudo rm -rf /usr/local/lib/nodesudo rm -rf /usr/local/lib/node_modulessudo rm -rf /var/db/receipts/org.nodejs.*sudo rm -rf /usr/local/include/node /Users/$USER/.npm*# 删除node命令sudo rm /usr/local/bin/node# 删除node的所有man手册sudo rm /usr/local/share/man/man1/node.1sudo rm /usr/local/share/man/man1/npm-*sudo rm /usr/local/share/man/man1/npm.1sudo rm /usr/local/share/man/man1/npx.1sudo rm /usr/local/share/man/man5/npm*sudo rm /usr/local/share/man/man5/package.JSON.5sudo rm /usr/local/share/man/man7/npm*

三、安装指定版本的node.js

3.1 安装

安装14版本的node.js

brew install node@14

 安装18版本的node.js

brew install node@18

3.2 配置环境变量

在终端中，执行

echo 'export PATH="/opt/homebrew/opt/node@14/bin:$PATH"' >> ~/.zshrc

使环境变量生效

source ~/.zshrc

查看node安装成功

node -v

来源地址：https://blog.csdn.net/qq_39208536/article/details/130965206