How to add a delay to onmousedown

I am trying to set a delay on the mousedown (click) which focuses the newWin.focus in code below:
So in short, the code below works fine. If the popup window is open, it re-focuses on it (bringing it back front) when the user clicks anywhere on the page.

I would like to have a 2 second delay when the user clicks on the page, THEN have it refocus on the new window.

I have spent hours trying to figure this out to no avail using various settimeout’s here and there. So, I thought I would show what I have that works and hope someone might explain how my need can be accomplished.

PS: I am still learning my way around javascript and in NO WAY consider myself knowledgeable in the subject.

Thanks in advance!!

<script type="text/javascript">
var newWin;
function openPopup()
{
 newWin=window.open('https://www.somesite/url.php','window','width=400,height=600,scrollbars=0,resizable=1,top=300,left=300');

 document.onmousedown=focusPopup;
 document.onkeyup=focusPopup;
 document.onmousemove=focusPopup;
}
function focusPopup(){
  if(!newWin.closed){
    newWin.focus();
  }
}
</script>

>Solution :

You can add a setTimeout to your mousedown handler:

document.onmousedown = () => setTimeout(focusPopup, 2000);