1 line
1.4 KiB
JavaScript
1 line
1.4 KiB
JavaScript
var Elevator=function(n){"use strict";function o(n,o,e,t){return n/=t/2,1>n?e/2*n*n+o:(n--,-e/2*(n*(n-2)-1)+o)}function e(n,o){for(var e in o){var t=void 0===n[e]&&"function"!=typeof e;t&&(n[e]=o[e])}return n}function t(n){w||(w=n);var e=n-w,i=o(e,f,-f,p);window.scrollTo(0,i),p>e?A=requestAnimationFrame(t):r()}function i(){return window.requestAnimationFrame&&window.Audio&&window.addEventListener}function u(){w=null,f=null,E=!1}function r(){u(),c&&(c.pause(),c.currentTime=0),m&&m.play()}function d(){E&&(cancelAnimationFrame(A),u(),c&&(c.pause(),c.currentTime=0),window.scrollTo(0,0))}function l(n){n.addEventListener?n.addEventListener("click",T.elevate,!1):n.attachEvent("onclick",function(){document.documentElement.scrollTop=0,document.body.scrollTop=0,window.scroll(0,0)})}function a(n){s=document.body;var o={duration:void 0,mainAudio:!1,endAudio:!1,preloadAudio:!0,loopAudio:!0};n=e(n,o),n.element&&l(n.element),i()&&(n.duration&&(v=!0,p=n.duration),window.addEventListener("blur",d,!1),n.mainAudio&&(c=new Audio(n.mainAudio),c.setAttribute("preload",n.preloadAudio),c.setAttribute("loop",n.loopAudio)),n.endAudio&&(m=new Audio(n.endAudio),m.setAttribute("preload","true")))}var c,m,s=null,A=null,p=null,v=!1,w=null,f=null,E=!1,T=this;this.elevate=function(){E||(E=!0,f=document.documentElement.scrollTop||s.scrollTop,v||(p=1.5*f),requestAnimationFrame(t),c&&c.play())},a(n)}; |