staxman-old/static/scripts/node-utils.ts

16 lines
446 B
TypeScript

/**
* Find nearest parent that satisfies a requirement
* @param node Node to start from
* @param findFn Matching function
* @returns Found element, or null if no parent matches
*/
export function findNearestParent(node: Node | Element, findFn: (el: Element) => boolean): HTMLElement | null {
let parent = node.parentElement;
while (parent) {
if (findFn(parent)) {
return parent;
}
parent = parent.parentElement;
}
return null;
}