8 lines
3.4 KiB
JavaScript
8 lines
3.4 KiB
JavaScript
/*!
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* jQuery Smooth Scroll - v1.7.2 - 2016-01-23
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* https://github.com/kswedberg/jquery-smooth-scroll
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* Copyright (c) 2016 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="1.7.2",c={},d={exclude:[],excludeWithin:[],offset:0,direction:"top",delegateSelector:null,scrollElement:null,scrollTarget:null,beforeScroll:function(){},afterScroll:function(){},easing:"swing",speed:400,autoCoefficient:2,preventDefault:!0},e=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};a.fn.extend({scrollable:function(a){var b=e.call(this,{dir:a});return this.pushStack(b)},firstScrollable:function(a){var b=e.call(this,{el:"first",dir:a});return this.pushStack(b)},smoothScroll:function(b,c){if(b=b||{},"options"===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.undelegate(b.delegateSelector,"click.smoothscroll").delegate(b.delegateSelector,"click.smoothscroll",e):this.unbind("click.smoothscroll").bind("click.smoothscroll",e),this}}),a.smoothScroll=function(b,d){if("options"===b&&"object"==typeof d)return a.extend(c,d);var e,f,g,h,i,j=0,k="offset",l="scrollTop",m={},n={};"number"==typeof b?(e=a.extend({link:null},a.fn.smoothScroll.defaults,c),g=b):(e=a.extend({link:null},a.fn.smoothScroll.defaults,b||{},c),e.scrollElement&&(k="position","static"===e.scrollElement.css("position")&&e.scrollElement.css("position","relative"))),l="left"===e.direction?"scrollLeft":l,e.scrollElement?(f=e.scrollElement,/^(?:HTML|BODY)$/.test(f[0].nodeName)||(j=f[l]())):f=a("html, body").firstScrollable(e.direction),e.beforeScroll.call(f,e),g="number"==typeof b?b:d||a(e.scrollTarget)[k]()&&a(e.scrollTarget)[k]()[e.direction]||0,m[l]=g+j+e.offset,h=e.speed,"auto"===h&&(i=Math.abs(m[l]-f[l]()),h=i/e.autoCoefficient),n={duration:h,easing:e.easing,complete:function(){e.afterScroll.call(e.link,e)}},e.step&&(n.step=e.step),f.length?f.stop().animate(m,n):e.afterScroll.call(e.link,e)},a.smoothScroll.version=b,a.smoothScroll.filterPath=function(a){return a=a||"",a.replace(/^\//,"").replace(/(?:index|default).[a-zA-Z]{3,4}$/,"").replace(/\/$/,"")},a.fn.smoothScroll.defaults=d});
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