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