Problem with jerky animation in jQuery

Question

Ive done this a number of times with no problem but for some reason it is a problem on Here. The slide down will begin to work (1/3) normally and than all of a suddenly jerk and finish the animation. slideing up works fine. this is the case for slideDown(), slideToggle and .animate() strangely if i also toggle opacity in the animate function it does not jerk but my text will briefly change color.

HTML:

<h2>Phthalate Free: </h2><div class="yamikowebsToggler">
    <p>
    Dibutyl Phthalate is linked to cancer and is present in nail polish, perfume, soft plastics and skin care products.
    </p></div>

CSS: i read else were that margins can cause the jerkiness but this isnt helping

    h2{color:#76DEFC; margin:0px;}
    .yamikowebsToggler{margin:0px;}
    p{margin:0px; color;#000000;}

JQUERY:

$(document).ready(function(){
    $(".yamikowebsToggler").fadeOut(0);
    $("h2").click(function()
    {
        $(this).next(".yamikowebsToggler").stop(true, true).animate(
        { height: 'toggle' }, 
        {
            duration: 1000,
        });
    })
});

Answer 1

I found the solution. it had nothing to do with my code but a bug in jquery. jquery has trouble getting the height if it is inherited because when it is getting the height the element is hidden. when elements are hidden they are treated with css properties of

position: absolute;
visibility: hidden;

to fix this you need to specify the height in either the animation which is not doable in my case since i have many that are toggled. the alternative is to set the height to the elements. i personally added a note in my jQuery about it and did it all in line simply adding

style="height: <height in px>;"

to the elements being toggled.

Answer 2

I had a similar issue when animating a division from 100% down to 0% width.

What was happening was that at the start of the animation the division got wider to like 110% for some reason.

Anyway I found the solution was to add max-width: 100%; in the CSS styles on the specific division.

Just thought I'd post that here as I came here looking for a fix to this issue. :)