Sha256: 7dcd65ee1b4496c039af9dec59570c49bd35ff5256d469790f0e2308aa54deac
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Versions: 271
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Contents
/**
* Get the scroll position of given element
* @method getScroll
* @memberof axe.utils
* @param {Element} node
* @param {buffer} (Optional) allowed negligence in overflow
* @returns {Object | undefined}
*/
axe.utils.getScroll = function getScroll(elm, buffer = 0) {
const overflowX = elm.scrollWidth > elm.clientWidth + buffer;
const overflowY = elm.scrollHeight > elm.clientHeight + buffer;
/**
* if there is neither `overflow-x` or `overflow-y`
* -> return
*/
if (!(overflowX || overflowY)) {
return;
}
const style = window.getComputedStyle(elm);
const overflowXStyle = style.getPropertyValue('overflow-x');
const overflowYStyle = style.getPropertyValue('overflow-y');
const scrollableX =
overflowXStyle !== 'visible' && overflowXStyle !== 'hidden';
const scrollableY =
overflowYStyle !== 'visible' && overflowYStyle !== 'hidden';
/**
* check direction of `overflow` and `scrollable`
*/
if ((overflowX && scrollableX) || (overflowY && scrollableY)) {
return {
elm,
top: elm.scrollTop,
left: elm.scrollLeft
};
}
};
Version data entries
271 entries across 271 versions & 1 rubygems