node.js module works from command line, not from script

问题

I've installed jsdom on my windows 8.1 machine.

If I am one directory above my local installation of jsdom, I can call

node jsdom

and everything works.

However, if, from the same dir / pwd, I call a script (at a different path) with

require("jsdom").jsdom;

I get errors of the type

Error: cannot find module 'jsdom'

回答1:

If you omit the extension, node will resort to looking in the node_modules folder for a package named "jsdom" (installed via NPM).

You can either install the module with NPM (preferred):

npm install jsdom --save

require("jsdom").jsdom;

Or include the file directly if you've manually added it to your filesystem:

require("./jsdom.js").jsdom;

来源：https://stackoverflow.com/questions/19969737/node-js-module-works-from-command-line-not-from-script