<script src="http://cdn.bootcss.com/jquery-mousewheel/3.1.13/jquery.mousewheel.min.js"></script>
$('#map').bind('mousewheel', function(event, delta) {
var dir = delta > 0 ? 'Up' : 'Down';
if (dir == 'Up') {
console.log('向上滚动');
} else {
console.log('向下滚动');
}
return false;
});
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