封装鼠标滚轮事件,兼容方法。。。拿去用吧
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var addEvent = (function(window, undefined) { var _eventCompat = function(event) { var type = event.type; if (type == 'DOMMouseScroll' || type == 'mousewheel') { event.delta = (event.wheelDelta) ? event.wheelDelta / 120 : -(event.detail || 0) / 3; } //alert(event.delta); if (event.srcElement && !event.target) { event.target = event.srcElement; } if (!event.preventDefault && event.returnValue !== undefined) { event.preventDefault = function() { event.returnValue = false; }; } /*......其他一些兼容性处理 */ return event; }; if (window.addEventListener) { return function(el, type, fn, capture) { if (type === "mousewheel" && document.mozHidden !== undefined) { type = "DOMMouseScroll"; } el.addEventListener(type, function(event) { fn.call(this, _eventCompat(event)); }, capture || false); } } else if (window.attachEvent) { return function(el, type, fn, capture) { el.attachEvent("on" + type, function(event) { event = event || window.event; fn.call(el, _eventCompat(event)); }); } } return function() {}; })(window); 封装得滚轮事件,兼容方法。。。拿去用吧