代码
window.onmousewheel = document.onmousewheel = function(e) {
e = e || window.event;
if (e.wheelDelta) { //判断浏览器IE，谷歌滑轮事件
if (e.wheelDelta > 0) { //当滑轮向上滚动时
console.log("滑轮向上滚动");
}
if (e.wheelDelta < 0) { //当滑轮向下滚动时
console.log("滑轮向下滚动");
}
} else if (e.detail) { //Firefox滑轮事件
if (e.detail > 0) { //当滑轮向上滚动时
console.log("滑轮向上滚动");
}
if (e.detail < 0) { //当滑轮向下滚动时
console.log("滑轮向下滚动");
}
}
}
