JS检测屏幕(鼠标或触屏)滚动方向

原理:window/document对象的mousewheel事件

var scrollFunc = function (e) { var direct = 0; 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"); } } }; //给页面绑定滑轮滚动事件if (document.addEventListener) { document.addEventListener('DOMMouseScroll', scrollFunc, false); } //滚动滑轮触发scrollFunc方法 window.onmousewheel = document.onmousewheel = scrollFunc;

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