How to check if Twitter bootstrap is loaded?

Question

How can I check whether there is a bootstrap.js loaded on page (a file bootstrap.js may be compiled into another big JS file)?

Answer 1

I would rather check for specific bootstrap plugin since modal or tooltip are very common, so

if(typeof($.fn.popover) != 'undefined'){
 // your stuff here
}

or

 if (typeof $.fn.popover == 'function') { 
   // your stuff here
  }

works in both bootstrap versions