web/assets/libs/jquery-plugin/mousewheel/3.1.9/mousewheel.js

这里只显示每个文件的开头 60 行。登录后可以解锁完整代码。

微信扫码关注公众号，代码整理好后第一时间通知你。

define("jquery-plugin/mousewheel/3.1.9/mousewheel",["$"],function(a){var b=a("$");!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a:a(b)}(function(a){function b(b){var g=b||window.event,h=i.call(arguments,1),j=0,k=0,l=0,m=0;if(b=a.event.fix(g),b.type="mousewheel","detail"in g&&(l=-1*g.detail),"wheelDelta"in g&&(l=g.wheelDelta),"wheelDeltaY"in g&&(l=g.wheelDeltaY),"wheelDeltaX"in g&&(k=-1*g.wheelDeltaX),"axis"in g&&g.axis===g.HORIZONTAL_AXIS&&(k=-1*l,l=0),j=0===l?k:l,"deltaY"in g&&(l=-1*g.deltaY,j=l),"deltaX"in g&&(k=g.deltaX,0===l&&(j=-1*k)),0!==l||0!==k){if(1===g.deltaMode){var n=a.data(this,"mousewheel-line-height");j*=n,l*=n,k*=n}else if(2===g.deltaMode){var o=a.data(this,"mousewheel-page-height");j*=o,l*=o,k*=o}return m=Math.max(Math.abs(l),Math.abs(k)),(!f||f>m)&&(f=m,d(g,m)&&(f/=40)),d(g,m)&&(j/=40,k/=40,l/=40),j=Math[j>=1?"floor":"ceil"](j/f),k=Math[k>=1?"floor":"ceil"](k/f),l=Math[l>=1?"floor":"ceil"](l/f),b.deltaX=k,b.deltaY=l,b.deltaFactor=f,b.deltaMode=0,h.unshift(b,j,k,l),e&&clearTimeout(e),e=setTimeout(c,200),(a.event.dispatch||a.event.handle).apply(this,h)}}function c(){f=null}function d(a,b){return k.settings.adjustOldDeltas&&"mousewheel"===a.type&&0===b%120}var e,f,g=["wheel","mousewheel","DOMMouseScroll","MozMousePixelScroll"],h="onwheel"in document||document.documentMode>=9?["wheel"]:["mousewheel","DomMouseScroll","MozMousePixelScroll"],i=Array.prototype.slice;if(a.event.fixHooks)for(var j=g.length;j;)a.event.fixHooks[g[--j]]=a.event.mouseHooks;var k=a.event.special.mousewheel={version:"3.1.9",setup:function(){if(this.addEventListener)for(var c=h.length;c;)this.addEventListener(h[--c],b,!1);else this.onmousewheel=b;a.data(this,"mousewheel-line-height",k.getLineHeight(this)),a.data(this,"mousewheel-page-height",k.getPageHeight(this))},teardown:function(){if(this.removeEventListener)for(var a=h.length;a;)this.removeEventListener(h[--a],b,!1);else this.onmousewheel=null},getLineHeight:function(b){return parseInt(a(b)["offsetParent"in a.fn?"offsetParent":"parent"]().css("fontSize"),10)},getPageHeight:function(b){return a(b).height()},settings:{adjustOldDeltas:!0}};a.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})})});