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THEtheChad/getScrollParent.ts

Last active June 30, 2022 09:40
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getScrollParent.ts
export default function getScrollParent(node?: Node | null) {
if (!(node instanceof HTMLElement)) return null;
if (typeof window.getComputedStyle !== 'function') return null;
const overflowY = window.getComputedStyle(node).overflowY || 'visible';
const isScrollable = /^(visible|hidden)/.test(overflowY);
if (isScrollable && node.scrollHeight >= node.clientHeight) {
return node;
}
return getScrollParent(node.parentNode) || document.body;
}
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