$.fn.scrollUnique = function() {    return $(this).each(function() {        var eventType = 'mousewheel';        if (document.mozHidden !== undefined) {            eventType = 'DOMMouseScroll';        }        $(this).on(eventType, function(event) {            // 一些数据            var scrollTop = this.scrollTop,                scrollHeight = this.scrollHeight,                height = this.clientHeight;            var delta = (event.originalEvent.wheelDelta) ? event.originalEvent.wheelDelta : -(event.originalEvent.detail || 0);                    if ((delta > 0 && scrollTop <= delta) || (delta < 0 && scrollHeight - height - scrollTop <= -1 * delta)) {                // IE浏览器下滚动会跨越边界直接影响父级滚动，因此，临界时候手动边界滚动定位                this.scrollTop = delta > 0? 0: scrollHeight;                // 向上滚 || 向下滚                event.preventDefault();            }                });    });    };$('#test').scrollUnique();

本文转自 张鑫旭的文章