NVM 安装

NVM 全称 Node Version Manager，顾名思义 Node.js 版本管理工具

本人用的Mac，直接用 Homebrew 安装 NVM

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brew install nvm

根据安装提示创建目录，导入环境变量后记得 source，nvm -v 检查是否安装成功

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You should create NVM's working directory if it doesn't exist:
  mkdir ~/.nvm

Add the following to your shell profile e.g. ~/.profile or ~/.zshrc:
  export NVM_DIR="$HOME/.nvm"
  [ -s "/opt/homebrew/opt/nvm/nvm.sh" ] && \. "/opt/homebrew/opt/nvm/nvm.sh"  # This loads nvm
  [ -s "/opt/homebrew/opt/nvm/etc/bash_completion.d/nvm" ] && \. "/opt/homebrew/opt/nvm/etc/bash_completion.d/nvm"  # This loads nvm bash_completion

nvm 使用方法 nvm -h，学过英文一般也看懂了

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Example:
  nvm install 8.0.0                     Install a specific version number
  nvm use 8.0                           Use the latest available 8.0.x release
  nvm run 6.10.3 app.js                 Run app.js using node 6.10.3
  nvm exec 4.8.3 node app.js            Run `node app.js` with the PATH pointing to node 4.8.3
  nvm alias default 8.1.0               Set default node version on a shell
  nvm alias default node                Always default to the latest available node version on a shell

  nvm install node                      Install the latest available version
  nvm use node                          Use the latest version
  nvm install --lts                     Install the latest LTS version
  nvm use --lts                         Use the latest LTS version

安装 Node.js

使用 nvm 安装 node.js，这里安装最新的 LTS 版本

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nvm install --lts

node -v 检查版本