How to calculate the height from the beginning of the body to the bottom edge of the last block (or element) in it?

Question

JavaScript

How to calculate the height from the beginning of the body to the bottom edge of the last block (or element) in it?

Answer 1

On js - first we get the coordinates relative to the browser window, then we add the window scroll to them.

var rect = el.getBoundingClientRect();
var top = rect.top + document.body.scrollTop;
var left = rect.left + document.body.scrollLeft;

jquery
$(el).offset();