Just getting started with node. I'm a little confused about the npm install -g option. Could someone tell me if the following is correct:

npm install -g installs global packages in a general location npm install installs packages in the specific folder regardless of how installed all dependencies need to be listed in the json file dependencies not installed with the -g option need to be listed as required in the appropriate *.js file 

so for example if installed with the -g option:

var app = express(); 

and if not installed with the -g option:

var express = require(‘express’); var app = express(); 

Just getting started with node. I'm a little confused about the npm install -g option. Could someone tell me if the following is correct:

• npm install -g installs global packages in a general location
• npm install installs packages in the specific folder
• regardless of how installed all dependencies need to be listed in the json file
• dependencies not installed with the -g option need to be listed as required in the appropriate *.js file

so for example if installed with the -g option:

var app = express(); 

and if not installed with the -g option:

var express = require(‘express’); var app = express();