jquery - Prevent enter key from triggering button -

i have search input box when user presses enter needs nothing. using emberjs , jquery below code. works disable pop being triggered reason in ie9 when enter pressed toggle button becomes in focus. works fine in chrome. i've tried tabindex , preventdefault neither trick.

   if ($el.hasclass('form-control')) {                     if ( e.which == 13) {                         this.get('controller').flipit();                      }                 } 

thank you.

edit------

here snippet of page. when user hit enter within search box button right getting highlighted. how prevent this?

do this

$("#inputbox").on('keydown', function(event) {     if (event.key == "enter") event.preventdefault(); });