1 (function ($) { 2     var mouseScroll = function (e) { 3         try { 4             var origEvent = e.originalEvent; 5             origEvent.preventDefault(); 6         } catch (err) { 7         } 8     }; 9     var mouseWheel = function (e) {10         try {11             e = e || window.event;12             e.preventDefault();13             e.returnValue = http://www.mamicode.com/false;14         } catch (err) {15         }16     };17     $.fn.preventOuterScroll = function () {18         var element = this.get(0);19         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {20             this.on("DOMMouseScroll", function (e) {21                 var origEvent = e.originalEvent;22                 element.scrollTop += origEvent.detail > 0 ? 60 : -60;23                 origEvent.preventDefault();24             });25         } else {26             element.onmousewheel = function (e) {27                 e = e || window.event;28                 element.scrollTop += e.wheelDelta > 0 ? -60 : 60;29                 e.preventDefault();30                 e.returnValue = http://www.mamicode.com/false;31             };32         }33         return this;34     };35     $.fn.preventScroll = function () {36         var element = this.get(0);37         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {38             this.on("DOMMouseScroll", mouseScroll);39         } else {40             $(element).on("mousewheel", mouseWheel);41         }42         return this;43     };44     $.fn.liveScroll = function() {45         var element = this.get(0);46         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {47             this.off("DOMMouseScroll", mouseScroll);48         } else {49             $(element).off("mousewheel", mouseWheel);50         }51         return this;52     };53 }($));