发生mousewheel 事件时显示wheelDelta 的值

2017-06-19 12:03:00
admin
原创
483
<!DOCTYPE html>
<html>
<head>
    <title>MouseWheel Event Example</title>
    <script type="text/javascript" src="http://code.ybao.org/demo/js/client.js"></script>
    <script type="text/javascript" src="http://code.ybao.org/demo/js/EventUtil.js"></script>
</head>
<body>
    <div id="myDiv">Try scrolling your mouse wheel (IE, Safari, and Opera).</div>
    <script type="text/javascript">
        EventUtil.addHandler(document, "mousewheel", function(event){
            event = EventUtil.getEvent(event);
            var delta = (client.engine.opera && client.engine.opera < 9.5 ? -event.wheelDelta : event.wheelDelta);
            alert(delta);
        });

    </script>
</body>
</html>
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