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Editorial Team
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Asked: 2026-06-09T15:00:37+00:00

I have the following function that ties into a bunch of different plugin settings,

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I have the following function that ties into a bunch of different plugin settings, allowing you to configure the handles, speed, and angles for rotating objects. Everything runs crystal clear and really nice in IE9, but firefox is jerky.

// 1. FUNCTION ROTATE ANIMATIONS IN
function rotate_on(degree, index){
clearTimeout(rotateofftimer);   /* CLEAR ANIMATION OUT TIMER */

// A. APPLY THE CROSS-BROWSER CSS FOR ROTATIONS
if((ievers==6)||(ievers==7)||(ievers==8)){ if(ievers==8){ /* IE 8 CODE */ current_obj.css({/* IE8 */'-ms-filter':'"progid:DXImageTransform.Microsoft.BasicImage(rotation='+degree+')"',/* IE<8 */'filter':'progid:DXImageTransform.Microsoft.BasicImage(rotation='+degree+')'});} else { /* IE 6/7 CODE */ };

} else { /* NON IE */ 
current_obj.css({/* W3C CSS3 standard */'transform':'translateX(0)rotate('+degree+'deg)','transform-origin':OS.rotate_handle_on_set[index],/* Firefox */'-moz-transform':'translateX(0)rotate('+degree+'deg)','-moz-transform-origin':OS.rotate_handle_on_set[index],/* Chrome, Safari, Mobile, Etc. */'-webkit-transform':'translateX(0)rotate('+degree+'deg)','-webkit-transform-origin':OS.rotate_handle_on_set[index],/* Opera */'-o-transform':'translateX(0)rotate('+degree+'deg)','-o-transform-origin':OS.rotate_handle_on_set[index],/* IE>=9 */'-ms-transform':'rotate('+degree+'deg)','-ms-transform':'translateX(0)rotate('+degree+'deg)','-ms-transform-origin':OS.rotate_handle_on_set[index]});};

// B. TEST FOR REPEAT ROTATIONS - IF VALUES ARE THE SAME, REPEAT ROTATIONS
if(OS.rotate_on_set[index]==OS.rotate_off_set[index]){ 

// SAVE THE ENDING VALUE TO PICKUP ON NEXT PLAY (IF LOOPING)
OS.rotate_on_set[index]=degree;OS.rotate_off_set[index]=degree; degree++;
}else{ if(degree<OS.rotate_off_set[index]){ degree++ };};

// C. TRIGGER THE FUNCTION IN A TIMER, BASED ON USER SPEED
rotateontimer = setTimeout(function(){rotate_on(degree, index)},OS.rotate_speed_on_set[index]);};

The strange thing is, when I turn the speed down so that the animation is really slow, it’s basically jerking through 1 frame at a time in Firefox, but IE9 seems to know how to translate that into a smooth/slow animation. Could it be something to do with the timers?
Thanks!

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1 Answer

  1. Editorial Team

    This just seems to be the way Firefox is. I have the same problem of choppy JS animations and ONLY when viewed with Firefox. Internet Explorer 9 (in standard mode plus compatibility modes “IE7” and “IE8”) and Chrome both display smooth animations under all circumstances.

    Trust me, we’re not the only ones with this problem and to day no clear solution exists.

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