2 lines
6.3 KiB
JavaScript
2 lines
6.3 KiB
JavaScript
/*! smooth-scroll v14.2.1 | (c) 2018 Chris Ferdinandi | MIT License | http://github.com/cferdinandi/smooth-scroll */
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window.Element&&!Element.prototype.closest&&(Element.prototype.closest=function(e){var t,n=(this.document||this.ownerDocument).querySelectorAll(e),o=this;do{for(t=n.length;--t>=0&&n.item(t)!==o;);}while(t<0&&(o=o.parentElement));return o}),(function(){function e(e,t){t=t||{bubbles:!1,cancelable:!1,detail:void 0};var n=document.createEvent("CustomEvent");return n.initCustomEvent(e,t.bubbles,t.cancelable,t.detail),n}if("function"==typeof window.CustomEvent)return!1;e.prototype=window.Event.prototype,window.CustomEvent=e})(),(function(){for(var e=0,t=["ms","moz","webkit","o"],n=0;n<t.length&&!window.requestAnimationFrame;++n)window.requestAnimationFrame=window[t[n]+"RequestAnimationFrame"],window.cancelAnimationFrame=window[t[n]+"CancelAnimationFrame"]||window[t[n]+"CancelRequestAnimationFrame"];window.requestAnimationFrame||(window.requestAnimationFrame=function(t,n){var o=(new Date).getTime(),i=Math.max(0,16-(o-e)),r=window.setTimeout((function(){t(o+i)}),i);return e=o+i,r}),window.cancelAnimationFrame||(window.cancelAnimationFrame=function(e){clearTimeout(e)})})(),(function(e,t){"function"==typeof define&&define.amd?define([],(function(){return t(e)})):"object"==typeof exports?module.exports=t(e):e.SmoothScroll=t(e)})("undefined"!=typeof global?global:"undefined"!=typeof window?window:this,(function(e){"use strict";var t={ignore:"[data-scroll-ignore]",header:null,topOnEmptyHash:!0,speed:500,clip:!0,offset:0,easing:"easeInOutCubic",customEasing:null,updateURL:!0,popstate:!0,emitEvents:!0},n=function(){return"querySelector"in document&&"addEventListener"in e&&"requestAnimationFrame"in e&&"closest"in e.Element.prototype},o=function(){for(var e={},t=0;t<arguments.length;t++)!(function(t){for(var n in t)t.hasOwnProperty(n)&&(e[n]=t[n])})(arguments[t]);return e},i=function(t){return!!("matchMedia"in e&&e.matchMedia("(prefers-reduced-motion)").matches)},r=function(t){return parseInt(e.getComputedStyle(t).height,10)},a=function(e){var t;try{t=decodeURIComponent(e)}catch(n){t=e}return t},u=function(e){"#"===e.charAt(0)&&(e=e.substr(1));for(var t,n=String(e),o=n.length,i=-1,r="",a=n.charCodeAt(0);++i<o;){if(0===(t=n.charCodeAt(i)))throw new InvalidCharacterError("Invalid character: the input contains U+0000.");t>=1&&t<=31||127==t||0===i&&t>=48&&t<=57||1===i&&t>=48&&t<=57&&45===a?r+="\\"+t.toString(16)+" ":r+=t>=128||45===t||95===t||t>=48&&t<=57||t>=65&&t<=90||t>=97&&t<=122?n.charAt(i):"\\"+n.charAt(i)}var u;try{u=decodeURIComponent("#"+r)}catch(e){u="#"+r}return u},c=function(e,t){var n;return"easeInQuad"===e.easing&&(n=t*t),"easeOutQuad"===e.easing&&(n=t*(2-t)),"easeInOutQuad"===e.easing&&(n=t<.5?2*t*t:(4-2*t)*t-1),"easeInCubic"===e.easing&&(n=t*t*t),"easeOutCubic"===e.easing&&(n=--t*t*t+1),"easeInOutCubic"===e.easing&&(n=t<.5?4*t*t*t:(t-1)*(2*t-2)*(2*t-2)+1),"easeInQuart"===e.easing&&(n=t*t*t*t),"easeOutQuart"===e.easing&&(n=1- --t*t*t*t),"easeInOutQuart"===e.easing&&(n=t<.5?8*t*t*t*t:1-8*--t*t*t*t),"easeInQuint"===e.easing&&(n=t*t*t*t*t),"easeOutQuint"===e.easing&&(n=1+--t*t*t*t*t),"easeInOutQuint"===e.easing&&(n=t<.5?16*t*t*t*t*t:1+16*--t*t*t*t*t),e.customEasing&&(n=e.customEasing(t)),n||t},s=function(){return Math.max(document.body.scrollHeight,document.documentElement.scrollHeight,document.body.offsetHeight,document.documentElement.offsetHeight,document.body.clientHeight,document.documentElement.clientHeight)},l=function(t,n,o,i){var r=0;if(t.offsetParent)do{r+=t.offsetTop,t=t.offsetParent}while(t);return r=Math.max(r-n-o,0),i&&(r=Math.min(r,s()-e.innerHeight)),r},m=function(e){return e?r(e)+e.offsetTop:0},d=function(e,t,n){t||history.pushState&&n.updateURL&&history.pushState({smoothScroll:JSON.stringify(n),anchor:e.id},document.title,e===document.documentElement?"#top":"#"+e.id)},f=function(t,n,o){0===t&&document.body.focus(),o||(t.focus(),document.activeElement!==t&&(t.setAttribute("tabindex","-1"),t.focus(),t.style.outline="none"),e.scrollTo(0,n))},h=function(t,n,o,i){if(n.emitEvents&&"function"==typeof e.CustomEvent){var r=new CustomEvent(t,{bubbles:!0,detail:{anchor:o,toggle:i}});document.dispatchEvent(r)}};return function(r,p){var g,v,w,y,E,b,S,A={};A.cancelScroll=function(e){cancelAnimationFrame(S),S=null,e||h("scrollCancel",g)},A.animateScroll=function(n,i,r){var a=o(g||t,r||{}),u="[object Number]"===Object.prototype.toString.call(n),p=u||!n.tagName?null:n;if(u||p){var v=e.pageYOffset;a.header&&!y&&(y=document.querySelector(a.header)),E||(E=m(y));var w,b,C,O=u?n:l(p,E,parseInt("function"==typeof a.offset?a.offset(n,i):a.offset,10),a.clip),I=O-v,q=s(),F=0,L=function(t,o){var r=e.pageYOffset;if(t==o||r==o||(v<o&&e.innerHeight+r)>=q)return A.cancelScroll(!0),f(n,o,u),h("scrollStop",a,n,i),w=null,S=null,!0},H=function(t){w||(w=t),F+=t-w,b=F/parseInt(a.speed,10),b=b>1?1:b,C=v+I*c(a,b),e.scrollTo(0,Math.floor(C)),L(C,O)||(S=e.requestAnimationFrame(H),w=t)};0===e.pageYOffset&&e.scrollTo(0,0),d(n,u,a),h("scrollStart",a,n,i),A.cancelScroll(!0),e.requestAnimationFrame(H)}};var C=function(t){if(!i()&&0===t.button&&!t.metaKey&&!t.ctrlKey&&"closest"in t.target&&(w=t.target.closest(r))&&"a"===w.tagName.toLowerCase()&&!t.target.closest(g.ignore)&&w.hostname===e.location.hostname&&w.pathname===e.location.pathname&&/#/.test(w.href)){var n=u(a(w.hash)),o=g.topOnEmptyHash&&"#"===n?document.documentElement:document.querySelector(n);o=o||"#top"!==n?o:document.documentElement,o&&(t.preventDefault(),A.animateScroll(o,w))}},O=function(e){if(null!==history.state&&history.state.smoothScroll&&history.state.smoothScroll===JSON.stringify(g)&&history.state.anchor){var t=document.querySelector(u(a(history.state.anchor)));t&&A.animateScroll(t,null,{updateURL:!1})}},I=function(e){b||(b=setTimeout((function(){b=null,E=m(y)}),66))};return A.destroy=function(){g&&(document.removeEventListener("click",C,!1),e.removeEventListener("resize",I,!1),e.removeEventListener("popstate",O,!1),A.cancelScroll(),g=null,v=null,w=null,y=null,E=null,b=null,S=null)},A.init=function(i){if(!n())throw"Smooth Scroll: This browser does not support the required JavaScript methods and browser APIs.";A.destroy(),g=o(t,i||{}),y=g.header?document.querySelector(g.header):null,E=m(y),document.addEventListener("click",C,!1),y&&e.addEventListener("resize",I,!1),g.updateURL&&g.popstate&&e.addEventListener("popstate",O,!1)},A.init(p),A}})); |