卸載和安裝指定版本的nodejs

卸載node
sudo rm -rf /usr/local/bin/npm /usr/local/share/man/man1/node* /usr/local/lib/dtrace/node.d ~/.npm ~/.node-gyp /opt/local/bin/node /opt/local/include/node /opt/local/lib/node_modules 

sudo rm -rf /usr/local/lib/node*

sudo rm -rf /usr/local/include/node*

sudo rm -rf /usr/local/bin/node*

安裝指定版本8.11.3
sudo n 8.11.3