Question

I want to know how much is the <textarea> or <div style="overflow:scroll"> scrolled. Vertically or horizontally. I expect an answer like this:

function getElementVerticalScroll(el){
      return integer
}

Answer 1

I’ve filled in the blank space of your function:

function getElementVerticalScroll(el){
      return el.scrollTop;
}
function getElementHorizontalScroll(el){
      return el.scrollLeft;
}