sticky.js

"use strict";!function(e){"function"==typeof define&&define.amd?define(e):"undefined"!=typeof module&&module.exports?module.exports=e():window.enterView=e.call(this)}(function(){var e=function(e){function n(){g=window.requestAnimationFrame||window.webkitRequestAnimationFrame||window.mozRequestAnimationFrame||window.msRequestAnimationFrame||function(e){return setTimeout(e,1e3/60)}}function t(){if(h&&"number"==typeof h){var e=Math.min(Math.max(0,h),1);return q-e*q}return q}function i(){var e=document.documentElement.clientHeight,n=window.innerHeight||0;q=Math.max(e,n)}function o(){y=!1;var e=t();A=A.filter(function(n){var t=n.getBoundingClientRect(),i=t.top,o=i<e;if(o&&!n.__enter_view){if(m(n),_)return!1}else!o&&n.__enter_view&&w&&w(n);return n.__enter_view=o,!0}),A.length||window.removeEventListener("scroll",r,!0)}function r(){y||(y=!0,g(o))}function u(){i(),o()}function f(e){for(var n=e.length,t=[],i=0;i<n;i+=1)t.push(e[i]);return t}function c(e){var n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:document;return"string"==typeof e?f(n.querySelectorAll(e)):e instanceof NodeList?f(e):e instanceof Array?e:void 0}function d(){A=c(l)}function a(){window.addEventListener("resize",u,!0),window.addEventListener("scroll",r,!0),u()}function s(){var e=l&&m;e||console.error("must set selector and enter options"),n(),d(),a(),o()}var l=e.selector,m=e.enter,w=e.exit,v=e.offset,h=void 0===v?0:v,p=e.once,_=void 0!==p&&p,g=null,y=!1,A=[],q=0;s()};return e});