@nutui/nutui-react/dist/esm/get-scroll-parent.js

京东风格的轻量级移动端 React 组件库，支持一套代码生成 H5 和小程序

import { c as canUseDom } from "./can-use-dom.js";
const defaultRoot = canUseDom ? window : void 0;
const overflowStylePatterns = ["scroll", "auto", "overlay"];
function isElement(node) {
  const ELEMENT_NODE_TYPE = 1;
  return node.nodeType === ELEMENT_NODE_TYPE;
}
function getScrollParent(el, root = defaultRoot) {
  let node = el;
  while (node && node !== root && isElement(node)) {
    if (node === document.body) {
      return root;
    }
    const { overflowY } = window.getComputedStyle(node);
    if (overflowStylePatterns.includes(overflowY) && node.scrollHeight > node.clientHeight) {
      return node;
    }
    node = node.parentNode;
  }
  return root;
}
function getAllScrollableParents(element, scrollableParents = []) {
  if (!element) {
    return scrollableParents;
  }
  const isScrollable = element.scrollHeight > element.clientHeight || element.scrollWidth > element.clientWidth;
  if (isScrollable) {
    if (element.nodeName === "HTML") {
      scrollableParents.push(document);
    } else {
      scrollableParents.push(element);
    }
  }
  return getAllScrollableParents(element.parentElement, scrollableParents);
}
export {
  getAllScrollableParents as a,
  getScrollParent as g
};