I was doing some testing with JavaScript and I believe I have discovered a bug with the onmouseout event in IE 11 on Windows 10. If you look at the page I have attached, and you allow scripts in IE, try to hover over the link. The onmouseout generates the alert box and if you move your mouse over to the alert box it generates numerous more alert boxes. This only seems to happen on Windows 10 Internet Explorer. It does not seem to happen on Edge, Chrome, or Firefox.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head></head><body onunload="alert('later');"><a href="www.google.com" onmouseout="alert('what it is')">Hover over me!</a><form><input type="button" value="press me" onClick="person='Bill';document.write(person);"/></form><script type="text/javascript">
var person = "Steve";
var num1=11;
function spit(){
document.write(person);
}
alert("Hello");
if(person=="Steve"){
if(num1==10){
alert("It works");
}
else{
alert("it broke");
}
}
spit();
document.write("<br>" + person);</script></body></html>