Gedit-jshint is a project mainly written in JAVASCRIPT and PYTHON, it's free.
a JSHint plugin for gedit
gedit-jshint is a plugin that allow you to check javascript files with the jshint syntax checker. For more infomation on JSHint, visit jshint.com. It is based on the gedit-jslint plugin by Caolan McMahon (2008) and Kilian Valkhof (2009 - 2011)
To install extract the files to: ~/.gnome2/gedit/plugins/
It requires rhino and simplejson. On Ubuntu 10.04 and later you can get the packages with the following command: sudo apt-get install rhino python-simplejson
On earlier versions of Ubuntu, and on certain other Linux systems, you might need "spidermonkey" instead of "rhino".
The plugin should then appear in the Gedit plugins list under Edit > Preferences > Plugins.
Click Tools > JSHint Check or press Shift+Ctrl+j to run it.
In the configuration dialog you can edit your globals and your configuration. A default configuration is supplied: / curly: true, eqeqeq: true, forin: true, undef: true,/ By default, no globals are defined.