Nodejs NPM install-g The difference between global and Non-global installations __JS

1. When npm install XXX-G, the module will be downloaded and installed into the global catalog.

The global catalog is set by the NPM config set prefix directory path.

For example, when we use NPM install-g Express to install the Express framework, we can open the console in one of our computers and use express MVC directly to create the project, or we will encounter "express" is not an internal or external command and is not a running program "error.

2. NPM Install xxx is the download module to the directory where the current command line resides.

For example:

C:\123>NPM Install XXX

will be installed to

C:\123\node_modules\xxx

Original link: http://www.cnblogs.com/rubylouvre/p/3423064.html