@jdcfe/yep-react/es/_utils/scrollParent.js

一套移动端的React组件库

export default (function (node) {
  if (!(node instanceof HTMLElement)) {
    return document.documentElement;
  }

  var excludeStaticParent = node.style.position === 'absolute';
  var overflowRegex = /(scroll|auto)/;
  var parent = node;

  while (parent) {
    if (!parent.parentNode) {
      return node.ownerDocument || document.documentElement;
    }

    var style = window.getComputedStyle(parent);
    var position = style.position;
    var overflow = style.overflow; // @ts-ignore

    var overflowX = style['overflow-x']; // @ts-ignore

    var overflowY = style['overflow-y'];

    if (position === 'static' && excludeStaticParent) {
      // @ts-ignore
      parent = parent.parentNode;
      continue;
    } // @ts-ignore


    if (overflowRegex.test(overflow) && overflowRegex.test(overflowX) && overflowRegex.test(overflowY)) {
      return parent;
    } // @ts-ignore


    parent = parent.parentNode;
  } // @ts-ignore


  return node.ownerDocument || node.documentElement || document.documentElement;
});