Twitter bootstrap: adding a class to the open accordion title

Question

I am a jquery/javascript newbie. What I want to do is add a class to the open accordion title, and remove it when i open another.

heres the code:

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Answer 1

This works for me using Bootstrap 3.3.6,

 $('#accordion')
   .on('show.bs.collapse', function (e) {
       $(e.target).parent('.panel').addClass('panel-primary');
   })
   .on('hide.bs.collapse', function (e) {
       $(e.target).parent('.panel').removeClass('panel-primary');
   });
        });