jQuery mouseleave and clearInterval not working

问题

I'm starting to play with SVG images, I've made two gearwheels which should turn on .mouseenter() and stop on .mouseleave(). Turning is made by setInterval function. I have a strange problem because on Linux Chromium everything works well. On Linux Firefox and Windows Chrome and Firefox gearwheels aren't stopping on mouseLeave and speed up on mouseEnter. I was trying both .hover() and .mouseenter()/mouseLeave() methods.

My code:

$(document).ready(function(){
    var deg = 0;
    var rotate_right = $('#cog1 use');
    var rotate_left = $('#cog2 use');
    var interval;
        $("#cogs").hover(
            function(){
                interval = setInterval(function(){
                if(deg >= 360) deg = 0;
                    deg += 1;
                    rotate_right.attr('transform', 'rotate('+deg+',32,32)');
                    rotate_left.attr('transform', 'rotate('+-deg+',32,32)');
            }, 10);
            },
            function(){
                clearInterval(interval);
            }
        );
});

My JSfiddle

回答1:

the problem is in your hover function.

Hover happens even when you move your mouse on the div#cogs.

This will add a new timeInterval, but the clearInterval is not called to clear the old one.

Just add if(interval) clearInterval(interval); to the first line of hover function.

来源：https://stackoverflow.com/questions/21599228/jquery-mouseleave-and-clearinterval-not-working