Is JSLint available for offline use?

Question

I'd like to use JSLint, but I am wary of tools that have access to my unfiltered source code. Is there an offline version or is there another similar tool that does "lint error checking" for JavaScript offline?

Edit: One with a GUI and that shows you a styled list of errors, instead of a command line interface?

Answer 1

If you like the JSLint web interface, you can do File > Save Page As... and Save as type: Web Page, complete (in Firefox, doing it in Internet Explorer may be slightly different) to a local folder.

I change the name to jslint.htm to get it under 8.3 with no spaces.

It seems to work when saved locally.

Three things:

1. This may violate his license, although I leave the Copyright intact and don't modify any of his code, and technically my web browser already created a copy of his site on my local HD, so I'm not sure whether I'm in violation or not and I'm not a lawyer so I'll keep doing this until I get a letter telling me to stop.
2. The page may somehow still be able to send your code to the Internet, although the chance of it being possible is very remote. That said, the WSH or Rhino versions could probably send the code you submit to the Internet easier than a version in a locally saved web page could (if you're paranoid).
3. You'll get behind on any bug fixes or updates Douglas does. But the same thing applies to the WSH or Rhino versions if you don't update them regularly.

Answer 2

JSLint can be run offline with either WSH or Rhino:

http://www.jslint.com/lint.html#try

Edit: In the two years since this question was asked, JSLint has dropped support for Rhino and WSH. I encourage anyone interested in linting their code to also check out JSHint. It's a fork of JSLint which aims to be more flexible than the original, but also happens to support Node, Rhino, and WSH (in addition to browsers, of course).

Answer 3

Yes:

• On Windows, use jslint.js + WSH.
• On systems that can run Rhino, use jslint.js + Rhino.

Basically, you just need an embedded JavaScript compiler to run jslint.js.

Answer 4

There's another JS Linter, called JavaScript Lint, that has both online and downloadable command line versions. I use the downloadable version all time. I've been thinking about integrating it into SVN as part of a hook. I like it better than JSLint because it has more options and seems to detect more things. It can be configured to treat certain identifiers as predefined, for toolkits and the like, which allows it to check for usage of undefined variables, which I'm pretty sure JSLint can't do.