preact-arco-design/es/Anchor/utils.js

Arco Design React UI Library.

import BTween from 'b-tween';
import { isString, isWindow } from "../_util/is";
export function findNode(dom, selector) {
  // handle id start with number
  // e.g. id #123
  var s = isString(selector) && selector[0] === '#' ? "[id='".concat(selector.replace('#', ''), "']") : selector;

  try {
    return dom.querySelector(s);
  } catch (e) {
    console.error(e);
    return null;
  }
}
export function slide(el, top, cb) {
  var tween = new BTween({
    from: {
      scrollTop: el.scrollTop
    },
    to: {
      scrollTop: top
    },
    easing: 'quartOut',
    duration: 300,
    onUpdate: function onUpdate(keys) {
      el.scrollTop = keys.scrollTop;
    },
    onFinish: function onFinish() {
      cb && cb();
    }
  });
  tween.start();
}
export function getContainer(targetContainer) {
  if (isString(targetContainer)) {
    return findNode(document, targetContainer);
  }

  return targetContainer || window;
}
export function getContainerElement(scrollContainer) {
  return isWindow(scrollContainer) ? document.documentElement || document.body : scrollContainer;
}