Dipak Kumar Pusti

After release of WordPress 2.5, the IDs on all admin pages have been removed as it was, probably due to the fact that the common user don’t need them. However, for advanced WordPress users / developers those IDs were quite interesting for some plugins or template tags.
What this plugin does is to display IDs on admin pages, showing the IDs, as it was in versions prior to 2.5

Display IDs

What this plugin does is to display IDs on admin pages, as it was in versions prior to 2.5

Aaron T. Grogg

This plug-in limits the classes WordPress added to navigation menus to only those desired by the Theme owner, 
adds a unique ID to each <code>li</code> and removes any empty <code>class</code> attributes.
More about this plug-in can be found at: 
http://aarontgrogg.com/2011/09/28/wordpress-plug-in-navigation-menu-ids-classes/
Please let me know if you have any questions/suggestions/thoughts,
Atg

Navigation Menu IDs & Classes

At least some aspect of this plugin seems like it should be available in WordPress core. 
I understand the rationale for menu items having menu-item-ID, but it's pretty practical for them to have the slug in there, as this plugin provides.
Suggestion for plugin feature - offer option for slug prefix.
Like if I have a menu item "updates" I may use the class "updates" elsewhere, but class "menu-item-updates" would target the menu-item for sure. Of course I can currently use double selectors.



1 for inclusion in core

To reduce the extraneous WordPress classes and add unique IDs to navigation menus.

Display IDs vs Navigation Menu IDs & Classes