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# JSHint, A Static Code Analysis Tool for JavaScript
\[ [Use it online](http://jshint.com/) •
[Docs](http://jshint.com/docs/) • [FAQ](http://jshint.com/docs/faq) •
[Install](http://jshint.com/install/) •
[Contribute](http://jshint.com/contribute/) •
[Blog](http://jshint.com/blog/) • [Twitter](https://twitter.com/jshint/) \]
[](https://www.npmjs.com/package/jshint)
[](https://travis-ci.org/jshint/jshint)
[](https://ci.appveyor.com/project/jshint/jshint/branch/master)
[](https://david-dm.org/jshint/jshint)
[](https://david-dm.org/jshint/jshint#info=devDependencies)
[](https://coveralls.io/r/jshint/jshint?branch=master)
JSHint is a community-driven tool to detect errors and potential problems in
JavaScript code and to enforce your team's coding conventions. It is very
flexible so you can easily adjust it to your particular coding guidelines and
the environment you expect your code to execute in. JSHint is open source and
will always stay this way.
## Our goal
The goal of this project is to help JavaScript developers write complex programs
without worrying about typos and language gotchas.
Any code base eventually becomes huge at some point, and simple mistakes—that
would not show themselves when written—can become show stoppers and waste
hours of debugging. And this is when static code analysis tools come into play
and help developers to spot such problems. JSHint scans a program written in
JavaScript and reports about commonly made mistakes and potential bugs. The
potential problem could be a syntax error, a bug due to implicit type
conversion, a leaking variable or something else.
Only 15% of all programs linted on [jshint.com](http://jshint.com) pass the
JSHint checks. In all other cases, JSHint finds some red flags that could've
been bugs or potential problems.
Please note, that while static code analysis tools can spot many different kind
of mistakes, it can't detect if your program is correct, fast or has memory
leaks. You should always combine tools like JSHint with unit and functional
tests as well as with code reviews.
## Reporting a bug
To report a bug simply create a
[new GitHub Issue](https://github.com/jshint/jshint/issues/new) and describe
your problem or suggestion. We welcome all kinds of feedback regarding
JSHint including but not limited to:
* When JSHint doesn't work as expected
* When JSHint complains about valid JavaScript code that works in all browsers
* When you simply want a new option or feature
Before reporting a bug look around to see if there are any open or closed tickets
that cover your issue. And remember the wisdom: pull request > bug report > tweet.
## Who uses JSHint?
Engineers from these companies and projects use JSHint:
* [Mozilla](https://www.mozilla.org/)
* [Wikipedia](https://wikipedia.org/)
* [Facebook](https://facebook.com/)
* [Twitter](https://twitter.com/)
* [Bootstrap](http://getbootstrap.com/)
* [Disqus](https://disqus.com/)
* [Medium](https://medium.com/)
* [Yahoo!](https://yahoo.com/)
* [SmugMug](http://smugmug.com/)
* [jQuery](http://jquery.com/)
* [PDF.js](http://mozilla.github.io/pdf.js)
* [Coursera](http://coursera.com/)
* [Adobe Brackets](http://brackets.io/)
* [Apache Cordova](http://cordova.io/)
* [RedHat](http://redhat.com/)
* [SoundCloud](http://soundcloud.com/)
* [Nodejitsu](http://nodejitsu.com/)
* [Yelp](https://yelp.com/)
* [Voxer](http://voxer.com/)
* [EnyoJS](http://enyojs.com/)
* [QuickenLoans](http://quickenloans.com/)
* [oDesk](http://www.odesk.com/)
* [Cloud9](http://c9.io/)
* [CodeClimate](https://codeclimate.com/)
* [Pandoo TEK](http://pandootek.com/)
* [Zendesk](http://zendesk.com/)
* [Apache CouchDB](http://couchdb.apache.org/)
And many more!
## License
Most files are published using [the standard MIT Expat
license](https://www.gnu.org/licenses/license-list.html#Expat). One file,
however, is provided under a slightly modified version of that license. The
so-called [JSON license](https://www.gnu.org/licenses/license-list.html#JSON)
is a non-free license, and unfortunately, we can't change it due to historical
reasons. This license is included as an in-line within the file it concerns.
## The JSHint Team
JSHint is currently maintained by [Rick Waldron](https://github.com/rwaldron/),
[Caitlin Potter](https://github.com/caitp/), [Mike
Sherov](https://github.com/mikesherov/), [Mike
Pennisi](https://github.com/jugglinmike/), and [Luke
Page](https://github.com/lukeapage).
## Thank you!
We really appreciate all kinds of feedback and contributions. Thanks for using and supporting JSHint!