Scripts/jquery.nicescroll.min.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。

/* jquery.nicescroll 3.5.6 InuYaksa*2014 MIT http://nicescroll.areaaperta.com */!function(e){"function"==typeof define&&define.amd?define(["jquery"],e):e(jQuery)}(function(e){function o(){var e=document.getElementsByTagName("script"),o=e[e.length-1].src.split("?")[0]
return o.split("/").length>0?o.split("/").slice(0,-1).join("/")+"/":""}function t(e,o,t){for(var r=0;r<o.length;r++)t(e,o[r])}var r=!1,i=!1,n=0,s=2e3,l=0,a=e,c=["ms","moz","webkit","o"],d=window.requestAnimationFrame||!1,u=window.cancelAnimationFrame||!1
if(!d)for(var h in c){var p=c[h]
d||(d=window[p+"RequestAnimationFrame"]),u||(u=window[p+"CancelAnimationFrame"]||window[p+"CancelRequestAnimationFrame"])}var m=window.MutationObserver||window.WebKitMutationObserver||!1,f={zindex:"auto",cursoropacitymin:0,cursoropacitymax:1,cursorcolor:"#424242",cursorwidth:"5px",cursorborder:"1px solid #fff",cursorborderradius:"5px",scrollspeed:60,mousescrollstep:24,touchbehavior:!1,hwacceleration:!0,usetransition:!0,boxzoom:!1,dblclickzoom:!0,gesturezoom:!0,grabcursorenabled:!0,autohidemode:!0,background:"",iframeautoresize:!0,cursorminheight:32,preservenativescrolling:!0,railoffset:!1,railhoffset:!1,bouncescroll:!0,spacebarenabled:!0,railpadding:{top:0,right:0,left:0,bottom:0},disableoutline:!0,horizrailenabled:!0,railalign:"right",railvalign:"bottom",enabletranslate3d:!0,enablemousewheel:!0,enablekeyboard:!0,smoothscroll:!0,sensitiverail:!0,enablemouselockapi:!0,cursorfixedheight:!1,directionlockdeadzone:6,hidecursordelay:400,nativeparentscrolling:!0,enablescrollonselection:!0,overflowx:!0,overflowy:!0,cursordragspeed:.3,rtlmode:"auto",cursordragontouch:!1,oneaxismousemode:"auto",scriptpath:o()},g=!1,w=function(){function e(){var e=["-moz-grab","-webkit-grab","grab"];(t.ischrome&&!t.ischrome22||t.isie)&&(e=[])
for(var r=0;r<e.length;r++){var i=e[r]
if(o.style.cursor=i,o.style.cursor==i)return i}return"url(//mail.google.com/mail/images/2/openhand.cur),n-resize"}if(g)return g
var o=document.createElement("DIV"),t={}
t.haspointerlock="pointerLockElement"in document||"mozPointerLockElement"in document||"webkitPointerLockElement"in document,t.isopera="opera"in window,t.isopera12=t.isopera&&"getUserMedia"in navigator,t.isoperamini="[object OperaMini]"===Object.prototype.toString.call(window.operamini),t.isie="all"in document&&"attachEvent"in o&&!t.isopera,t.isieold=t.isie&&!("msInterpolationMode"in o.style),t.isie7=!(!t.isie||t.isieold||"documentMode"in document&&7!=document.documentMode),t.isie8=t.isie&&"documentMode"in document&&8==document.documentMode,t.isie9=t.isie&&"performance"in window&&document.documentMode>=9,t.isie10=t.isie&&"performance"in window&&document.documentMode>=10,t.isie9mobile=/iemobile.9/i.test(navigator.userAgent),t.isie9mobile&&(t.isie9=!1),t.isie7mobile=!t.isie9mobile&&t.isie7&&/iemobile/i.test(navigator.userAgent),t.ismozilla="MozAppearance"in o.style,t.iswebkit="WebkitAppearance"in o.style,t.ischrome="chrome"in window,t.ischrome22=t.ischrome&&t.haspointerlock,t.ischrome26=t.ischrome&&"transition"in o.style,t.cantouch="ontouchstart"in document.documentElement||"ontouchstart"in window,t.hasmstouch=window.navigator.msPointerEnabled||!1,t.ismac=/^mac$/i.test(navigator.platform),t.isios=t.cantouch&&/iphone|ipad|ipod/i.test(navigator.platform),t.isios4=t.isios&&!("seal"in Object),t.isandroid=/android/i.test(navigator.userAgent),t.trstyle=!1,t.hastransform=!1,t.hastranslate3d=!1,t.transitionstyle=!1,t.hastransition=!1,t.transitionend=!1
for(var r=["transform","msTransform","webkitTransform","MozTransform","OTransform"],i=0;i<r.length;i++)if(void 0!==o.style[r[i]]){t.trstyle=r[i]
break}t.hastransform=0!=t.trstyle,t.hastransform&&(o.style[t.trstyle]="translate3d(1px,2px,3px)",t.hastranslate3d=/translate3d/.test(o.style[t.trstyle])),t.transitionstyle=!1,t.prefixstyle="",t.transitionend=!1
for(var r=["transition","webkitTransition","MozTransition","OTransition","OTransition","msTransition","KhtmlTransition"],n=["","-webkit-","-moz-","-o-","-o","-ms-","-khtml-"],s=["transitionend","webkitTransitionEnd","transitionend","otransitionend","oTransitionEnd","msTransitionEnd","KhtmlTransitionEnd"],i=0;i<r.length;i++)if(r[i]in o.style){t.transitionstyle=r[i],t.prefixstyle=n[i],t.transitionend=s[i]
break}return t.ischrome26&&(t.prefixstyle=n[1]),t.hastransition=t.transitionstyle,t.cursorgrabvalue=e(),t.hasmousecapture="setCapture"in o,t.hasMutationObserver=m!==!1,o=null,g=t,t},v=function(e,o){function t(){var e=v.doc.css(x.trstyle)
return e&&"matrix"==e.substr(0,6)?e.replace(/^.*\((.*)\)$/g,"$1").replace(/px/g,"").split(/, +/):!1}function c(){var e=v.win
if("zIndex"in e)return e.zIndex()
for(;e.length>0;){if(9==e[0].nodeType)return!1
var o=e.css("zIndex")
if(!isNaN(o)&&0!=o)return parseInt(o)
e=e.parent()}return!1}function h(e,o,t){var r=e.css(o),i=parseFloat(r)
if(isNaN(i)){i=T[r]||0
var n=3==i?t?v.win.outerHeight()-v.win.innerHeight():v.win.outerWidth()-v.win.innerWidth():1
return v.isie8&&i&&(i+=1),n?i:0}return i}function p(e,o,t,r){v._bind(e,o,function(r){var r=r?r:window.event,i={original:r,target:r.target||r.srcElement,type:"wheel",deltaMode:"MozMousePixelScroll"==r.type?0:1,deltaX:0,deltaZ:0,preventDefault:function(){return r.preventDefault?r.preventDefault():r.returnValue=!1,!1},stopImmediatePropagation:function(){r.stopImmediatePropagation?r.stopImmediatePropagation():r.cancelBubble=!0}}
return"mousewheel"==o?(i.deltaY=-1/40*r.wheelDelta,r.wheelDeltaX&&(i.deltaX=-1/40*r.wheelDeltaX)):i.deltaY=r.detail,t.call(e,i)},r)}function g(e,o,t){var r,i
if(0==e.deltaMode?(r=-Math.floor(e.deltaX*(v.opt.mousescrollstep/54)),i=-Math.floor(e.deltaY*(v.opt.mousescrollstep/54))):1==e.deltaMode&&(r=-Math.floor(e.deltaX*v.opt.mousescrollstep),i=-Math.floor(e.deltaY*v.opt.mousescrollstep)),o&&v.opt.oneaxismousemode&&0==r&&i&&(r=i,i=0),r&&(v.scrollmom&&v.scrollmom.stop(),v.lastdeltax+=r,v.debounced("mousewheelx",function(){var e=v.lastdeltax
v.lastdeltax=0,v.rail.drag||v.doScrollLeftBy(e)},15)),i){if(v.opt.nativeparentscrolling&&t&&!v.ispage&&!v.zoomactive)if(0>i){if(v.getScrollTop()>=v.page.maxh)return!0}else if(v.getScrollTop()<=0)return!0
v.scrollmom&&v.scrollmom.stop(),v.lastdeltay+=i,v.debounced("mousewheely",function(){var e=v.lastdeltay
v.lastdeltay=0,v.rail.drag||v.doScrollBy(e)},15)}return e.stopImmediatePropagation(),e.preventDefault()}var v=this
if(this.version="3.5.6",this.name="nicescroll",this.me=o,this.opt={doc:a("body"),win:!1},a.extend(this.opt,f),this.opt.snapbackspeed=80,e)for(var y in v.opt)void 0!==e[y]&&(v.opt[y]=e[y])
this.doc=v.opt.doc,this.iddoc=this.doc&&this.doc[0]?this.doc[0].id||"":"",this.ispage=/^BODY|HTML/.test(v.opt.win?v.opt.win[0].nodeName:this.doc[0].nodeName),this.haswrapper=v.opt.win!==!1,this.win=v.opt.win||(this.ispage?a(window):this.doc),this.docscroll=this.ispage&&!this.haswrapper?a(window):this.win,this.body=a("body"),this.viewport=!1,this.isfixed=!1,this.iframe=!1,this.isiframe="IFRAME"==this.doc[0].nodeName&&"IFRAME"==this.win[0].nodeName,this.istextarea="TEXTAREA"==this.win[0].nodeName,this.forcescreen=!1,this.canshowonmouseevent="scroll"!=v.opt.autohidemode,this.onmousedown=!1,this.onmouseup=!1,this.onmousemove=!1,this.onmousewheel=!1,this.onkeypress=!1,this.ongesturezoom=!1,this.onclick=!1,this.onscrollstart=!1,this.onscrollend=!1,this.onscrollcancel=!1,this.onzoomin=!1,this.onzoomout=!1,this.view=!1,this.page=!1,this.scroll={x:0,y:0},this.scrollratio={x:0,y:0},this.cursorheight=20,this.scrollvaluemax=0,this.isrtlmode="auto"==this.opt.rtlmode?"rtl"==(this.win[0]==window?this.body:this.win).css("direction"):this.opt.rtlmode===!0,this.scrollrunning=!1,this.scrollmom=!1,this.observer=!1,this.observerremover=!1
do this.id="ascrail"+s++
while(document.getElementById(this.id))
this.rail=!1,this.cursor=!1,this.cursorfreezed=!1,this.selectiondrag=!1,this.zoom=!1,this.zoomactive=!1,this.hasfocus=!1,this.hasmousefocus=!1,this.visibility=!0,this.locked=!1,this.hidden=!1,this.cursoractive=!0,this.wheelprevented=!1,this.overflowx=v.opt.overflowx,this.overflowy=v.opt.overflowy,this.nativescrollingarea=!1,this.checkarea=0,this.events=[],this.saved={},this.delaylist={},this.synclist={},this.lastdeltax=0,this.lastdeltay=0,this.detected=w()
var x=a.extend({},this.detected)
this.canhwscroll=x.hastransform&&v.opt.hwacceleration,this.ishwscroll=this.canhwscroll&&v.haswrapper,this.istouchcapable=!1,x.cantouch&&x.iswebkit&&!x.isios&&!x.isandroid&&(this.istouchcapable=!0,x.cantouch=!1),x.cantouch&&x.ismozilla&&!x.isios&&!x.isandroid&&(this.istouchcapable=!0,x.cantouch=!1),v.opt.enablemouselockapi||(x.hasmousecapture=!1,x.haspointerlock=!1),this.delayed=function(e,o,t,r){var i=v.delaylist[e],n=(new Date).getTime()
return!r&&i&&i.tt?!1:(i&&i.tt&&clearTimeout(i.tt),void(i&&i.last+t>n&&!i.tt?v.delaylist[e]={last:n+t,tt:setTimeout(function(){v&&(v.delaylist[e].tt=0,o.call())},t)}:i&&i.tt||(v.delaylist[e]={last:n,tt:0},setTimeout(function(){o.call()},0))))},this.debounced=function(e,o,t){{var r=v.delaylist[e];(new Date).getTime()}v.delaylist[e]=o,r||setTimeout(function(){var o=v.delaylist[e]
v.delaylist[e]=!1,o.call()},t)}
var S=!1
if(this.synched=function(e,o){function t(){S||(d(function(){S=!1
for(e in v.synclist){var o=v.synclist[e]
o&&o.call(v),v.synclist[e]=!1}}),S=!0)}return v.synclist[e]=o,t(),e},this.unsynched=function(e){v.synclist[e]&&(v.synclist[e]=!1)},this.css=function(e,o){for(var t in o)v.saved.css.push([e,t,e.css(t)]),e.css(t,o[t])},this.scrollTop=function(e){return void 0===e?v.getScrollTop():v.setScrollTop(e)},this.scrollLeft=function(e){return void 0===e?v.getScrollLeft():v.setScrollLeft(e)},BezierClass=function(e,o,t,r,i,n,s){this.st=e,this.ed=o,this.spd=t,this.p1=r||0,this.p2=i||1,this.p3=n||0,this.p4=s||1,this.ts=(new Date).getTime(),this.df=this.ed-this.st},BezierClass.prototype={B2:function(e){return 3*e*e*(1-e)},B3:function(e){return 3*e*(1-e)*(1-e)},B4:function(e){return(1-e)*(1-e)*(1-e)},getNow:function(){var e=(new Date).getTime(),o=1-(e-this.ts)/this.spd,t=this.B2(o)+this.B3(o)+this.B4(o)
return 0>o?this.ed:this.st+Math.round(this.df*t)},update:function(e,o){return this.st=this.getNow(),this.ed=e,this.spd=o,this.ts=(new Date).getTime(),this.df=this.ed-this.st,this}},this.ishwscroll){this.doc.translate={x:0,y:0,tx:"0px",ty:"0px"},x.hastranslate3d&&x.isios&&this.doc.css("-webkit-backface-visibility","hidden"),this.getScrollTop=function(e){if(!e){var o=t()
if(o)return 16==o.length?-o[13]:-o[5]
if(v.timerscroll&&v.timerscroll.bz)return v.timerscroll.bz.getNow()}return v.doc.translate.y},this.getScrollLeft=function(e){if(!e){var o=t()
if(o)return 16==o.length?-o[12]:-o[4]
if(v.timerscroll&&v.timerscroll.bh)return v.timerscroll.bh.getNow()}return v.doc.translate.x},this.notifyScrollEvent=document.createEvent?function(e){var o=document.createEvent("UIEvents")
o.initUIEvent("scroll",!1,!0,window,1),e.dispatchEvent(o)}:document.fireEvent?function(e){var o=document.createEventObject()
e.fireEvent("onscroll"),o.cancelBubble=!0}:function(){}
var z=this.isrtlmode?1:-1
x.hastranslate3d&&v.opt.enabletranslate3d?(this.setScrollTop=function(e,o){v.doc.translate.y=e,v.doc.translate.ty=-1*e+"px",v.doc.css(x.trstyle,"translate3d("+v.doc.translate.tx+","+v.doc.translate.ty+",0px)"),o||v.notifyScrollEvent(v.win[0])},this.setScrollLeft=function(e,o){v.doc.translate.x=e,v.doc.translate.tx=e*z+"px",v.doc.css(x.trstyle,"translate3d("+v.doc.translate.tx+","+v.doc.translate.ty+",0px)"),o||v.notifyScrollEvent(v.win[0])}):(this.setScrollTop=function(e,o){v.doc.translate.y=e,v.doc.translate.ty=-1*e+"px",v.doc.css(x.trstyle,"translate("+v.doc.translate.tx+","+v.doc.translate.ty+")"),o||v.notifyScrollEvent(v.win[0])},this.setScrollLeft=function(e,o){v.doc.translate.x=e,v.doc.translate.tx=e*z+"px",v.doc.css(x.trstyle,"translate("+v.doc.translate.tx+","+v.doc.translate.ty+")"),o||v.notifyScrollEvent(v.win[0])})}else this.getScrollTop=function(){return v.docscroll.scrollTop()},this.setScrollTop=function(e){return v.docscroll.scrollTop(e)},this.getScrollLeft=function(){return v.detected.ismozilla&&v.isrtlmode?Math.abs(v.docscroll.scrollLeft()):v.docscroll.scrollLeft()},this.setScrollLeft=function(e){return v.docscroll.scrollLeft(v.detected.ismozilla&&v.isrtlmode?-e:e)}
this.getTarget=function(e){return e?e.target?e.target:e.srcElement?e.srcElement:!1:!1},this.hasParent=function(e,o){if(!e)return!1
for(var t=e.target||e.srcElement||e||!1;t&&t.id!=o;)t=t.parentNode||!1
return t!==!1}
var T={thin:1,medium:3,thick:5}
this.getOffset=function(){if(v.isfixed)return{top:parseFloat(v.win.css("top")),left:parseFloat(v.win.css("left"))}
if(!v.viewport)return v.win.offset()
var e=v.win.offset(),o=v.viewport.offset()
return{top:e.top-o.top+v.viewport.scrollTop(),left:e.left-o.left+v.viewport.scrollLeft()}},this.updateScrollBar=function(e){if(v.ishwscroll)v.rail.css({height:v.win.innerHeight()}),v.railh&&v.railh.css({width:v.win.innerWidth()})
else{var o=v.getOffset(),t={top:o.top,left:o.left}
t.top+=h(v.win,"border-top-width",!0)
{(v.win.outerWidth()-v.win.innerWidth())/2}t.left+=v.rail.align?v.win.outerWidth()-h(v.win,"border-right-width")-v.rail.width:h(v.win,"border-left-width")
var r=v.opt.railoffset