Bootstrap Tabs Not Switching

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you are missing a closing " on your class it should be

   <ul class="nav nav-tabs"id="tabs">

see if that fixes it

Solution 2:

I think the problem is with the jQuery verison 1.6, bootstrap used .on() which was added only in jQuery verision 1.7. So upgrade jQuery to a newer version and it should be fine

With jQuery 1.6.4: Demo - not working because of error

Uncaught TypeError: Object [objectObject] has no method 'on'

Demo: jQuery 1.7, jQuery 1.9