9 lines
3.7 KiB
JavaScript
9 lines
3.7 KiB
JavaScript
/*!
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* jQuery Smooth Scroll - v2.2.0 - 2017-05-05
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* https://github.com/kswedberg/jquery-smooth-scroll
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* Copyright (c) 2017 Karl Swedberg
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* Licensed MIT
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*/
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!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):a("object"==typeof module&&module.exports?require("jquery"):jQuery)}(function(a){var b={},c={exclude:[],excludeWithin:[],offset:0,direction:"top",delegateSelector:null,scrollElement:null,scrollTarget:null,autoFocus:!1,beforeScroll:function(){},afterScroll:function(){},easing:"swing",speed:400,autoCoefficient:2,preventDefault:!0},d=function(b){var c=[],d=!1,e=b.dir&&"left"===b.dir?"scrollLeft":"scrollTop";return this.each(function(){var b=a(this);if(this!==document&&this!==window)return!document.scrollingElement||this!==document.documentElement&&this!==document.body?void(b[e]()>0?c.push(this):(b[e](1),d=b[e]()>0,d&&c.push(this),b[e](0))):(c.push(document.scrollingElement),!1)}),c.length||this.each(function(){this===document.documentElement&&"smooth"===a(this).css("scrollBehavior")&&(c=[this]),c.length||"BODY"!==this.nodeName||(c=[this])}),"first"===b.el&&c.length>1&&(c=[c[0]]),c},e=/^([\-\+]=)(\d+)/;a.fn.extend({scrollable:function(a){var b=d.call(this,{dir:a});return this.pushStack(b)},firstScrollable:function(a){var b=d.call(this,{el:"first",dir:a});return this.pushStack(b)},smoothScroll:function(b,c){if("options"===(b=b||{}))return c?this.each(function(){var b=a(this),d=a.extend(b.data("ssOpts")||{},c);a(this).data("ssOpts",d)}):this.first().data("ssOpts");var d=a.extend({},a.fn.smoothScroll.defaults,b),e=function(b){var c=function(a){return a.replace(/(:|\.|\/)/g,"\\$1")},e=this,f=a(this),g=a.extend({},d,f.data("ssOpts")||{}),h=d.exclude,i=g.excludeWithin,j=0,k=0,l=!0,m={},n=a.smoothScroll.filterPath(location.pathname),o=a.smoothScroll.filterPath(e.pathname),p=location.hostname===e.hostname||!e.hostname,q=g.scrollTarget||o===n,r=c(e.hash);if(r&&!a(r).length&&(l=!1),g.scrollTarget||p&&q&&r){for(;l&&j<h.length;)f.is(c(h[j++]))&&(l=!1);for(;l&&k<i.length;)f.closest(i[k++]).length&&(l=!1)}else l=!1;l&&(g.preventDefault&&b.preventDefault(),a.extend(m,g,{scrollTarget:g.scrollTarget||r,link:e}),a.smoothScroll(m))};return null!==b.delegateSelector?this.off("click.smoothscroll",b.delegateSelector).on("click.smoothscroll",b.delegateSelector,e):this.off("click.smoothscroll").on("click.smoothscroll",e),this}});var f=function(a){var b={relative:""},c="string"==typeof a&&e.exec(a);return"number"==typeof a?b.px=a:c&&(b.relative=c[1],b.px=parseFloat(c[2])||0),b},g=function(b){var c=a(b.scrollTarget);b.autoFocus&&c.length&&(c[0].focus(),c.is(document.activeElement)||(c.prop({tabIndex:-1}),c[0].focus())),b.afterScroll.call(b.link,b)};a.smoothScroll=function(c,d){if("options"===c&&"object"==typeof d)return a.extend(b,d);var e,h,i,j,k=f(c),l={},m=0,n="offset",o="scrollTop",p={},q={};k.px?e=a.extend({link:null},a.fn.smoothScroll.defaults,b):(e=a.extend({link:null},a.fn.smoothScroll.defaults,c||{},b),e.scrollElement&&(n="position","static"===e.scrollElement.css("position")&&e.scrollElement.css("position","relative")),d&&(k=f(d))),o="left"===e.direction?"scrollLeft":o,e.scrollElement?(h=e.scrollElement,k.px||/^(?:HTML|BODY)$/.test(h[0].nodeName)||(m=h[o]())):h=a("html, body").firstScrollable(e.direction),e.beforeScroll.call(h,e),l=k.px?k:{relative:"",px:a(e.scrollTarget)[n]()&&a(e.scrollTarget)[n]()[e.direction]||0},p[o]=l.relative+(l.px+m+e.offset),i=e.speed,"auto"===i&&(j=Math.abs(p[o]-h[o]()),i=j/e.autoCoefficient),q={duration:i,easing:e.easing,complete:function(){g(e)}},e.step&&(q.step=e.step),h.length?h.stop().animate(p,q):g(e)},a.smoothScroll.version="2.2.0",a.smoothScroll.filterPath=function(a){return a=a||"",a.replace(/^\//,"").replace(/(?:index|default).[a-zA-Z]{3,4}$/,"").replace(/\/$/,"")},a.fn.smoothScroll.defaults=c});
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