要在jQuery中检测eventType，请使用事件类型属性。您可以尝试运行以下代码以了解如何在jQuery中检测eventType-
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script>
$(document).ready(function(){
$("p").on("mouseover mouseout",function(event){
$("div").html("Event Type: " + event.type);
});
});
</script>
</head>
<body>
<div>
<p>This has mouseover and mouseout event defined. Keep your cursor to see the event type below.</p>
</div>
</body>
</html>