javascript - Getting rid of the double click effect -

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here's fiddle. can see i've defined simple click event handler:

$('#traveller > a').click(function(e) {     e.preventdefault();      var $ul = $('#traveller ul');     if($(this).hasclass('handle-next')) {         if(math.abs($ul.position().top - parentpadding) < totalheight - itemheight) {             $ul.animate({top: '-=' + itemheight});         }     }     else {         if($ul.position().top - parentpadding < 0) {              $ul.animate({top: '+=' + itemheight});         }     } });

i've noticed when make few double clicks quickly, pressing a.handle-next/a.handle-prev, ul position changes unexpectedly.

howcome avoid behavior?

just check if $ul animated:

if($ul.is(':animated')) return;

demo


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