安装node.js

https://nodejs.org/en/

This package will install:
? Node.js v8.11.1 to /usr/local/bin/node
? npm v5.6.0 to /usr/local/bin/npm

This package has installed:

• Node.js v8.11.1 to /usr/local/bin/node
• npm v5.6.0 to /usr/local/bin/npm

Make sure that /usr/local/bin is in your $PATH.

安装node.js

原文：https://www.cnblogs.com/qianjinyan/p/8999728.html