<html><body>
function dome(e)
{
console.log(e.target.tagName)
}
<button onclick="dome(this);">click</button>
</body></html>
<button id="elem" onclick="alert('Click!');">Autoclick</button>
<script>
let event = new Event("click");
elem.dispatchEvent(event);
</script>
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
</head><body>
<button id="elem" onclick="alert('Click!');">Autoclick</button>
<script>
function xx(){
let event = new Event("click");
elem.dispatchEvent(event);
}
setTimeout(xx,1000)
</script>
</body>
</html>
where you click?
<!DOCTYPE html>
<html>
<body>
<script>
document.onclick=function(e){
console.log(e.clientX)
}
</script>
</body>
</html>