node 版本控制记录

node 版本控制 nvm

1. install

   1	brew install nvm

2. show node version

   1 2	nvm ls nvm ls-remote

3. install and uninstall

   1 2	nvm install <node version> nvm unistall <node version>

4. switch

   1 2	nvm alias default <version> nvm alias default node (use the lastest version)