scrolldepth.min.js

/*!
 * @preserve
 * jquery.scrolldepth.js | v0.6
 * Copyright (c) 2014 Rob Flaherty (@robflaherty)
 * Licensed under the MIT and GPL licenses.
 */
!function(e,n,t){"use strict";var r,a,o,i={minHeight:0,elements:[],percentage:!0,userTiming:!0,pixelDepth:!0,nonInteraction:!0},l=e(n),c=[],u=0;e.scrollDepth=function(h){function p(e,n,t,i){o?(dataLayer.push({event:"ScrollDistance",eventCategory:"Scroll Depth",eventAction:e,eventLabel:n,eventValue:1,eventNonInteraction:h.nonInteraction}),h.pixelDepth&&arguments.length>2&&t>u&&(u=t,dataLayer.push({event:"ScrollDistance",eventCategory:"Scroll Depth",eventAction:"Pixel Depth",eventLabel:f(t),eventValue:1,eventNonInteraction:h.nonInteraction})),h.userTiming&&arguments.length>3&&dataLayer.push({event:"ScrollTiming",eventCategory:"Scroll Depth",eventAction:e,eventLabel:n,eventTiming:i})):(r&&(ga("send","event","Scroll Depth",e,n,1,{nonInteraction:h.nonInteraction?1:0}),h.pixelDepth&&arguments.length>2&&t>u&&(u=t,ga("send","event","Scroll Depth","Pixel Depth",f(t),1,{nonInteraction:h.nonInteraction?1:0})),h.userTiming&&arguments.length>3&&ga("send","timing","Scroll Depth",e,i,n)),a&&(_gaq.push(["_trackEvent","Scroll Depth",e,n,1,h.nonInteraction]),h.pixelDepth&&arguments.length>2&&t>u&&(u=t,_gaq.push(["_trackEvent","Scroll Depth","Pixel Depth",f(t),1,h.nonInteraction])),h.userTiming&&arguments.length>3&&_gaq.push(["_trackTiming","Scroll Depth",e,i,n,100])))}function g(e){return{"25%":parseInt(.25*e,10),"50%":parseInt(.5*e,10),"75%":parseInt(.75*e,10),"100%":e-5}}function s(n,t,r){e.each(n,function(n,a){-1===e.inArray(n,c)&&t>=a&&(p("Percentage",n,t,r),c.push(n))})}function v(n,t,r){e.each(n,function(n,a){-1===e.inArray(a,c)&&e(a).length&&t>=e(a).offset().top&&(p("Elements",a,t,r),c.push(a))})}function f(e){return(250*Math.floor(e/250)).toString()}function m(e,n){var t,r,a,o=null,i=0,l=function(){i=new Date,o=null,a=e.apply(t,r)};return function(){var c=new Date;i||(i=c);var u=n-(c-i);return t=this,r=arguments,0>=u?(clearTimeout(o),o=null,i=c,a=e.apply(t,r)):o||(o=setTimeout(l,u)),a}}var D=+new Date;h=e.extend({},i,h),e(t).height()<h.minHeight||("function"==typeof ga&&(r=!0),"undefined"!=typeof _gaq&&"function"==typeof _gaq.push&&(a=!0),"undefined"!=typeof dataLayer&&"function"==typeof dataLayer.push&&(o=!0),h.percentage?p("Percentage","Baseline"):h.elements&&p("Elements","Baseline"),l.on("scroll.scrollDepth",m(function(){var r=e(t).height(),a=n.innerHeight?n.innerHeight:l.height(),o=l.scrollTop()+a,i=g(r),u=+new Date-D;return c.length>=4+h.elements.length?void l.off("scroll.scrollDepth"):(h.elements&&v(h.elements,o,u),void(h.percentage&&s(i,o,u)))},500)))}}(jQuery,window,document);