iscrolljs/test/js/iscrolljs.js

Smooth scroll without jQuery

'use strict';var _typeof='function'==typeof Symbol&&'symbol'==typeof Symbol.iterator?function(a){return typeof a;}:function(a){return a&&'function'==typeof Symbol&&a.constructor===Symbol&&a!==Symbol.prototype?'symbol':typeof a;};(function(){'use strict';var a={historySetting:!0, selector:'.navigation__link', eventEmitting:!0};!function(){function a(a){return new RegExp(['MSIE ', 'Trident/', 'Edge/'].join('|')).test(a);} function b(){function b(a, b){this.scrollLeft=a, this.scrollTop=b;} function k(a){return .5*(1-Math.cos(Math.PI*a));} function e(a){if (null===a||'object'!=('undefined'==typeof a?'undefined':_typeof(a))||void 0===a.behavior||'auto'===a.behavior||'instant'===a.behavior) return!0;if ('object'==('undefined'==typeof a?'undefined':_typeof(a))&&'smooth'===a.behavior) return!1;throw new TypeError('behavior member of ScrollOptions '+a.behavior+' is not a valid value for enumeration ScrollBehavior.');} function i(a, b){return 'Y'===b?a.clientHeight+p<a.scrollHeight:'X'===b?a.clientWidth+p<a.scrollWidth:void 0;} function m(a, b){var c=g.getComputedStyle(a, null)['overflow'+b];return 'auto'===c||'scroll'===c;} function c(a){var b=i(a, 'Y')&&m(a, 'Y'), c=i(a, 'X')&&m(a, 'X');return b||c;} function l(a){var b;do b=(a=a.parentNode)===j.body;while (!1===b&&!1===c(a));return b=null, a;} function q(a){var b, c, e, f=(u()-a.startTime)/d;b=k(f=1<f?1:f), c=a.startX+(a.x-a.startX)*b, e=a.startY+(a.y-a.startY)*b, a.method.call(a.scrollable, c, e), c===a.x&&e===a.y||g.requestAnimationFrame(q.bind(g, a));} function f(a, d, e){var k, l, m, o, t=u();a===j.body?(k=g, l=g.scrollX||g.pageXOffset, m=g.scrollY||g.pageYOffset, o=h.scroll):(k=a, l=a.scrollLeft, m=a.scrollTop, o=b), q({scrollable:k, method:o, startTime:t, startX:l, startY:m, x:d, y:e});}if (!('scrollBehavior'in j.documentElement.style&&!0!==g.__forceSmoothScrollPolyfill__)){var n=g.HTMLElement||g.Element, d=468, p=a(g.navigator.userAgent)?1:0, h={scroll:g.scroll||g.scrollTo, scrollBy:g.scrollBy, elementScroll:n.prototype.scroll||b, scrollIntoView:n.prototype.scrollIntoView}, u=g.performance&&g.performance.now?g.performance.now.bind(g.performance):Date.now;g.scroll=g.scrollTo=function(){void 0!==arguments[0]&&(!0===e(arguments[0])?h.scroll.call(g, void 0===arguments[0].left?'object'==_typeof(arguments[0])?g.scrollX||g.pageXOffset:arguments[0]:arguments[0].left, void 0===arguments[0].top?void 0===arguments[1]?g.scrollY||g.pageYOffset:arguments[1]:arguments[0].top):f.call(g, j.body, void 0===arguments[0].left?g.scrollX||g.pageXOffset:~~arguments[0].left, void 0===arguments[0].top?g.scrollY||g.pageYOffset:~~arguments[0].top));}, g.scrollBy=function(){void 0!==arguments[0]&&(e(arguments[0])?h.scrollBy.call(g, void 0===arguments[0].left?'object'==_typeof(arguments[0])?0:arguments[0]:arguments[0].left, void 0===arguments[0].top?void 0===arguments[1]?0:arguments[1]:arguments[0].top):f.call(g, j.body, ~~arguments[0].left+(g.scrollX||g.pageXOffset), ~~arguments[0].top+(g.scrollY||g.pageYOffset)));}, n.prototype.scroll=n.prototype.scrollTo=function(){if (void 0!==arguments[0]) if(!0!==e(arguments[0])){var a=arguments[0].left, b=arguments[0].top;f.call(this, this, void 0===a?this.scrollLeft:~~a, void 0===b?this.scrollTop:~~b);} else{if ('number'==typeof arguments[0]&&void 0===arguments[1]) throw new SyntaxError('Value couldn\'t be converted');h.elementScroll.call(this, void 0===arguments[0].left?'object'==_typeof(arguments[0])?this.scrollLeft:~~arguments[0]:~~arguments[0].left, void 0===arguments[0].top?void 0===arguments[1]?this.scrollTop:~~arguments[1]:~~arguments[0].top);}}, n.prototype.scrollBy=function(){void 0!==arguments[0]&&(!0===e(arguments[0])?h.elementScroll.call(this, void 0===arguments[0].left?~~arguments[0]+this.scrollLeft:~~arguments[0].left+this.scrollLeft, void 0===arguments[0].top?~~arguments[1]+this.scrollTop:~~arguments[0].top+this.scrollTop):this.scroll({left:~~arguments[0].left+this.scrollLeft, top:~~arguments[0].top+this.scrollTop, behavior:arguments[0].behavior}));}, n.prototype.scrollIntoView=function(){if (!0!==e(arguments[0])){var a=l(this), b=a.getBoundingClientRect(), c=this.getBoundingClientRect();a===j.body?g.scrollBy({left:c.left, top:c.top, behavior:'smooth'}):(f.call(this, a, a.scrollLeft+c.left-b.left, a.scrollTop+c.top-b.top), 'fixed'!==g.getComputedStyle(a).position&&g.scrollBy({left:b.left, top:b.top, behavior:'smooth'}));} else h.scrollIntoView.call(this, void 0===arguments[0]||arguments[0]);};}} var g=window, j=document;'object'==('undefined'==typeof exports?'undefined':_typeof(exports))?module.exports={polyfill:b}:b();}();var b=a.selector, c=a.historySetting;document.querySelectorAll(b).forEach(function(a){var b=a.href;a.addEventListener('click', function(a){a.preventDefault(), document.getElementById(b.split('#')[1]).scrollIntoView({behavior:'smooth'}), c&&history.pushState(null, null, '/'+b.split('#')[1]);});}, !0);})();