Bootstrap's JavaScript requires jQuery version 1.9.1 or higher
Type $.fn.jquery
in your console and tell us what numbers it says. You probably have a second version running somewhere.
Bootstrap v3.3.6 isn't compatible with the jQuery 3.0. This will be fixed in the upcoming Bootstrap version 3.3.7. Here's the issue currently open on GitHub. https://github.com/twbs/bootstrap/issues/16834
In my case(Bootstrap) the issue was, having the JQuery 3.0.0 which is also not fine, So using a version which is an earlier version like 2.2.4.
The Error i got was: Bootstrap's JavaScript requires jQuery version 1.9.1 or higher, but lower than version 3
Using any of these CDN below as the source would help if this is the case!
jQuery version 2.2.4:
http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.2.4.js
http://ajax.aspnetcdn.com/ajax/jQuery/jquery-2.2.4.min.js
Hope this helped at least someone!.. :)
Thank you!