Get the absolute height of an element.

get_absolute_height.js

const getAbsoluteHeight = (element) => {
  const style = window.getComputedStyle(element);
  const attrs = ['height', 'padding-top', 'padding-bottom', 'margin-top', 'margin-bottom'];
  
  return attrs
    .map((k) => parseInt(style.getPropertyValue(k), 10))
    .reduce((p, c) => p + c);
};