Javascript alternative height, width control

is there away to use a different positioning system for elements. where you don't change the width and height of the 开发者_如何学Celement instead you can change it using left,right, top, bottom

more or less like the flex controllers?

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Yes you can, I'm not 100% sure if it's fully supported in all browsers but you can use absolute positioning and specify ALL of the coordinates.

i.e.

.pos {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

Which should stretch across the whole window.

You can then modify, or animate each of the properties in jQuery..

i.e.

$(".pos").animate({
    bottom: "50%",
    right: "50%"
}, 2000);

Cheers,

Marko