vue-antd-ui/es/vc-lazy-load/src/utils/getElementPosition.js

An enterprise-class UI design language and Vue-based implementation

/*
* Finds element's position relative to the whole document,
* rather than to the viewport as it is the case with .getBoundingClientRect().
*/
export default function getElementPosition(element) {
  var rect = element.getBoundingClientRect();

  return {
    top: rect.top + window.pageYOffset,
    left: rect.left + window.pageXOffset
  };
}