Onscroll function is not working for Chrome

Question

The below code is working fine for Firefox browser. But, not chrome. What is the issue in below code ?

window.onload = function()
{
   document.body.onscroll =  Test.callFn;
}

var Test = new function()
{
   this.callFn = function()
   {
      console.log("Calling this function");
   }
}

Thanks

Answer 1

This might also happen when the height of html and body tags is set to 100% and the scroll event does not fire for window nor document. To check which element is scrolled I slightly modified Aaron Mason's snippet which wasn't working for me either:

document.querySelectorAll('*').forEach(function(elem) {
    elem.addEventListener('scroll', function() {
        console.log(this);
    });
});