What’s wrong with the following line of code (from WordPress 2.6.5, common.js)?
jQuery(function(){jQuery('#media-buttons a').tTips();});What guarantees do you have that by the time the internal function executes the global jQuery will still be the one you expect it to be or that it will have the tTips plug-in you attached a few lines earlier? Nothing. You just ASSUME it will be. You didn’t put it there, so you can be sure that nobody will. Right.
jQuery developers knew this might be a problem so jQuery will pass a reference to the itself as an argument when triggering this event:
jQuery(function($){$('#media-buttons a').tTips();});This would work and wouldn’t break. And it would make your platform a bit more hackable.