Aaron T. Grogg

This plug-in takes the URL, chops it into pieces, and adds each “piece” as an additional 
class to the <code>body</code> tag.
Meaning, if your page’s URL is: 
http://www.example.com/2012/02/24/wordpress-plugin-add-url-slugs-as-body-classes/ 
Your page’s <code>body</code> tag would have at least these classes: 
 2012 02 24 wordpress-plugin-add-url-slugs-as-body-classess
It gets much stronger when you start thinking about Categories or nested Pages: 
 http://www.example.com/category/wordpress/ 
which would add: 
 category wordpress 
while: 
 http://www.example.com/movies/star-trek/wrath-of-khan/ 
would add: 
 movies star-trek wrath-of-khan
This allows you to very easily add custom CSS and/or JS to these pages based on these new CSS classes.
Please let me know if you have any questions/suggestions/thoughts, 
Atg 
http://aarontgrogg.com/ 
aarontgrogg@gmail.com

Add URL Slugs as Body Classes

Edward Caissie

Simple plugin that adds classes to the <code>body_class</code> output upon activation, including: a full list of date related classes; a few holiday classes; and, a generic sample full calendar extension.
<h4>Copyright 2012-2015 Edward Caissie (email : edward.caissie@gmail.com)</h4>
This program is free software; you can redistribute it and/or modify 
 it under the terms of the GNU General Public License version 2, 
 as published by the Free Software Foundation.
You may NOT assume that you can use any other version of the GPL.
This program is distributed in the hope that it will be useful, 
 but WITHOUT ANY WARRANTY; without even the implied warranty of 
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
 GNU General Public License for more details.
You should have received a copy of the GNU General Public License 
 along with this program; if not, write to the Free Software 
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
The license for this software can also likely be found here: 
 http://www.gnu.org/licenses/gpl-2.0.html

BNS Body Classes

Simple plugin that adds classes to the body_class output upon activation, including a range of date related classes.

Add URL Slugs as Body Classes vs BNS Body Classes