Install

Must have node and npm installed first.

npm install -v install

Check if its installed globally

This will return the version too.

npm list -g jslint

Use It

Change directories to where the javascript file is.

jslint  myscript.js

Actually jshint may be better

jslint only accepts spaces(not tabs), and complains about jquery

npm install -g jshint

jshint myscript.js