feat: only init toc when there are headings

release 2.6.3

7 files changed, 21 insertions, 8 deletions

diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 853aabf..892a857 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -51,7 +51,7 @@
 <link rel="mask-icon" href="{{ "safari-pinned-tab.svg" | relURL }}" color="#5bbad5">
 
 <!-- Styles -->
-<link href="{{ "dist/even.min.css?v=2.6.2" | relURL }}" rel="stylesheet">
+<link href="{{ "dist/even.min.css?v=2.6.3" | relURL }}" rel="stylesheet">
 {{ if .Site.Params.bootcdn -}}
   {{ if .Site.Params.fancybox }}<link href="https://cdn.bootcss.com/fancybox/3.1.20/jquery.fancybox.min.css" rel="stylesheet" crossorigin="anonymous">{{ end }}
 {{- else if .Site.Params.publicCDN.enable -}}
diff --git a/layouts/partials/scripts.html b/layouts/partials/scripts.html
index 285b53b..f966eb2 100644
--- a/layouts/partials/scripts.html
+++ b/layouts/partials/scripts.html
@@ -13,7 +13,7 @@
   <script type="text/javascript" src="{{ "lib/slideout/slideout-1.0.1.min.js" | relURL }}"></script>
   {{ if .Site.Params.fancybox }}<script type="text/javascript" src="{{ "lib/fancybox/jquery.fancybox-3.1.20.min.js" | relURL }}"></script>{{ end }}
 {{- end }}
-<script type="text/javascript" src="{{ "dist/even.min.js?v=2.6.2" | relURL }}"></script>
+<script type="text/javascript" src="{{ "dist/even.min.js?v=2.6.3" | relURL }}"></script>
 
 {{- if and (and .Site.Params.mathjax (ne .Params.mathjax false)) (or .IsPage .IsHome) }}
   <script type="text/javascript">
diff --git a/src/js/even.js b/src/js/even.js
index 8aa8459..87494c4 100644
--- a/src/js/even.js
+++ b/src/js/even.js
@@ -48,7 +48,7 @@ Even.mobileNavbar = function () {
   })
 }
 
-Even.toc = function () {
+Even._initToc = function () {
   var SPACING = 20
   var $toc = $('.post-toc')
   var $footer = $('.post-footer')
@@ -152,7 +152,21 @@ Even.highlight = function () {
   }
 }
 
-Even.beforeToc = function () {
+Even.toc = function () {
+  const tocContainer = document.getElementById('post-toc')
+  if (tocContainer !== null) {
+    const toc = document.getElementById('TableOfContents')
+    if (toc === null) {
+      // toc = true, but there are no headings
+      tocContainer.parentNode.removeChild(tocContainer)
+    } else {
+      this._linkToc()
+      this._initToc()
+    }
+  }
+}
+
+Even._linkToc = function () {
   const links = document.querySelectorAll('#TableOfContents a')
   for (let i = 0; i < links.length; i++) links[i].className += ' toc-link'
 
diff --git a/src/js/main.js b/src/js/main.js
index 6539cf2..1764dfd 100644
--- a/src/js/main.js
+++ b/src/js/main.js
@@ -5,7 +5,6 @@ import '../css/style.scss'
 $(document).ready(function () {
   Even.backToTop()
   Even.mobileNavbar()
-  Even.beforeToc()
   Even.toc()
   Even.fancybox()
 })
diff --git a/src/package.json b/src/package.json
index d44cdaa..2a9fa73 100644
--- a/src/package.json
+++ b/src/package.json
@@ -1,6 +1,6 @@
 {
   "name": "even-src",
-  "version": "2.6.2",
+  "version": "2.6.3",
   "description": "even source file",
   "main": "index.js",
   "scripts": {
diff --git a/static/dist/even.min.js b/static/dist/even.min.js
index 8290fd5..edc1040 100644
--- a/static/dist/even.min.js
+++ b/static/dist/even.min.js
@@ -1,2 +1,2 @@
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+!function(e){function n(o){if(t[o])return t[o].exports;var c=t[o]={i:o,l:!1,exports:{}};return e[o].call(c.exports,c,c.exports,n),c.l=!0,c.exports}var t={};n.m=e,n.c=t,n.d=function(e,t,o){n.o(e,t)||Object.defineProperty(e,t,{configurable:!1,enumerable:!0,get:o})},n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,"a",t),t},n.o=function(e,n){return Object.prototype.hasOwnProperty.call(e,n)},n.p="",n(n.s=0)}([function(e,n,t){"use strict";var o=t(1);t(2),$(document).ready(function(){o.Even.backToTop(),o.Even.mobileNavbar(),o.Even.toc(),o.Even.fancybox()}),hljs.initHighlighting(),o.Even.highlight()},function(e,n,t){"use strict";Object.defineProperty(n,"__esModule",{value:!0});var o={};o.backToTop=function(){var e=$("#back-to-top");$(window).scroll(function(){$(window).scrollTop()>100?e.fadeIn(1e3):e.fadeOut(1e3)}),e.click(function(){$("body,html").animate({scrollTop:0})})},o.mobileNavbar=function(){var e=$("#mobile-navbar"),n=$(".mobile-navbar-icon"),t=new Slideout({panel:document.getElementById("mobile-panel"),menu:document.getElementById("mobile-menu"),padding:180,tolerance:70});t.disableTouch(),n.click(function(){t.toggle()}),t.on("beforeopen",function(){e.addClass("fixed-open"),n.addClass("icon-click").removeClass("icon-out")}),t.on("beforeclose",function(){e.removeClass("fixed-open"),n.addClass("icon-out").removeClass("icon-click")}),$("#mobile-panel").on("touchend",function(){t.isOpen()&&n.click()})},o._initToc=function(){var e=$(".post-toc"),n=$(".post-footer");if(e.length){var t=e.offset().top-20,o=n.offset().top-e.height()-20,c={start:{position:"absolute",top:t},process:{position:"fixed",top:20},end:{position:"absolute",top:o}};$(window).scroll(function(){var n=$(window).scrollTop();n<t?e.css(c.start):n>o?e.css(c.end):e.css(c.process)})}var i=$(".toc-link"),l=$(".headerlink"),a=$.map(l,function(e){return $(e).offset().top});$(window).scroll(function(){for(var e=$(window).scrollTop(),n=0;n<i.length;n++){var t=n+1===i.length,o=a[n]-30,c=t?1/0:a[n+1]-30;o<e&&e<=c?$(i[n]).addClass("active"):$(i[n]).removeClass("active")}})},o.fancybox=function(){$.fancybox&&($(".post-content").each(function(){$(this).find("img").each(function(){$(this).wrap('<a class="fancybox" href="'+this.src+'" data-fancybox="gallery" data-caption="'+this.title+'"></a>')})}),$(".fancybox").fancybox({selector:".fancybox",protect:!0}))},o.highlight=function(){for(var e=document.querySelectorAll("pre code"),n=0;n<e.length;n++){for(var t=e[n],o=t.parentElement,c=t.innerHTML.split(/\n/).slice(0,-1),i=c.length,l="",a=0;a<i;a++)l+='<div class="line">'+(a+1)+"</div>";for(var r="",s=0;s<i;s++)r+='<div class="line">'+c[s]+"</div>";t.className+=" highlight";var f=document.createElement("figure");f.className=t.className,f.innerHTML='<table><tbody><tr><td class="gutter"><pre>'+l+'</pre></td><td class="code"><pre>'+r+"</pre></td></tr></tbody></table>",o.parentElement.replaceChild(f,o)}},o.toc=function(){var e=document.getElementById("post-toc");if(null!==e){null===document.getElementById("TableOfContents")?e.parentNode.removeChild(e):(this._linkToc(),this._initToc())}},o._linkToc=function(){for(var e=document.querySelectorAll("#TableOfContents a"),n=0;n<e.length;n++)e[n].className+=" toc-link";for(var t=1;t<=6;t++)for(var o=document.querySelectorAll(".post-content>h"+t),c=0;c<o.length;c++){var i=o[c];i.innerHTML='<a href="#'+i.id+'" class="headerlink" title="'+i.innerHTML+'"></a>'+i.innerHTML}},n.Even=o},function(e,n){}]);
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\ No newline at end of file
diff --git a/static/dist/even.min.js.map b/static/dist/even.min.js.map
index d1cdd07..cd3a06e 100644
--- a/static/dist/even.min.js.map
+++ b/static/dist/even.min.js.map
@@ -1 +1 @@
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__webpack_require__) {\n\n\"use strict\";\n\n\nObject.defineProperty(exports, \"__esModule\", {\n  value: true\n});\nvar Even = {};\n\nEven.backToTop = function () {\n  var $backToTop = $('#back-to-top');\n\n  $(window).scroll(function () {\n    if ($(window).scrollTop() > 100) {\n      $backToTop.fadeIn(1000);\n    } else {\n      $backToTop.fadeOut(1000);\n    }\n  });\n\n  $backToTop.click(function () {\n    $('body,html').animate({ scrollTop: 0 });\n  });\n};\n\nEven.mobileNavbar = function () {\n  var $mobileNav = $('#mobile-navbar');\n  var $mobileNavIcon = $('.mobile-navbar-icon');\n  var slideout = new Slideout({\n    'panel': document.getElementById('mobile-panel'),\n    'menu': document.getElementById('mobile-menu'),\n    'padding': 180,\n    'tolerance': 70\n  });\n  slideout.disableTouch();\n\n  $mobileNavIcon.click(function () {\n    slideout.toggle();\n  });\n\n  slideout.on('beforeopen', function () {\n    $mobileNav.addClass('fixed-open');\n    $mobileNavIcon.addClass('icon-click').removeClass('icon-out');\n  });\n\n  slideout.on('beforeclose', function () {\n    $mobileNav.removeClass('fixed-open');\n    $mobileNavIcon.addClass('icon-out').removeClass('icon-click');\n  });\n\n  $('#mobile-panel').on('touchend', function () {\n    slideout.isOpen() && $mobileNavIcon.click();\n  });\n};\n\nEven.toc = function () {\n  var SPACING = 20;\n  var $toc = $('.post-toc');\n  var $footer = $('.post-footer');\n\n  if ($toc.length) {\n    var minScrollTop = $toc.offset().top - SPACING;\n    var maxScrollTop = $footer.offset().top - $toc.height() - SPACING;\n\n    var tocState = {\n      start: {\n        'position': 'absolute',\n        'top': minScrollTop\n      },\n      process: {\n        'position': 'fixed',\n        'top': SPACING\n      },\n      end: {\n        'position': 'absolute',\n        'top': maxScrollTop\n      }\n    };\n\n    $(window).scroll(function () {\n      var scrollTop = $(window).scrollTop();\n\n      if (scrollTop < minScrollTop) {\n        $toc.css(tocState.start);\n      } else if (scrollTop > maxScrollTop) {\n        $toc.css(tocState.end);\n      } else {\n        $toc.css(tocState.process);\n      }\n    });\n  }\n\n  var HEADERFIX = 30;\n  var $toclink = $('.toc-link');\n  var $headerlink = $('.headerlink');\n\n  var headerlinkTop = $.map($headerlink, function (link) {\n    return $(link).offset().top;\n  });\n\n  $(window).scroll(function () {\n    var scrollTop = $(window).scrollTop();\n\n    for (var i = 0; i < $toclink.length; i++) {\n      var isLastOne = i + 1 === $toclink.length;\n      var currentTop = headerlinkTop[i] - HEADERFIX;\n      var nextTop = isLastOne ? Infinity : headerlinkTop[i + 1] - HEADERFIX;\n\n      if (currentTop < scrollTop && scrollTop <= nextTop) {\n        $($toclink[i]).addClass('active');\n      } else {\n        $($toclink[i]).removeClass('active');\n      }\n    }\n  });\n};\n\nEven.fancybox = function () {\n  if ($.fancybox) {\n    $('.post-content').each(function () {\n      $(this).find('img').each(function () {\n        $(this).wrap('<a class=\"fancybox\" href=\"' + this.src + '\" data-fancybox=\"gallery\" data-caption=\"' + this.title + '\"></a>');\n      });\n    });\n\n    $('.fancybox').fancybox({\n      selector: '.fancybox',\n      protect: true\n    });\n  }\n};\n\nEven.highlight = function () {\n  var blocks = document.querySelectorAll('pre code');\n  for (var i = 0; i < blocks.length; i++) {\n    var block = blocks[i];\n    var rootElement = block.parentElement;\n    var lineCodes = block.innerHTML.split(/\\n/).slice(0, -1);\n    var lineLength = lineCodes.length;\n\n    var codeLineHtml = '';\n    for (var _i = 0; _i < lineLength; _i++) {\n      codeLineHtml += '<div class=\"line\">' + (_i + 1) + '</div>';\n    }\n\n    var codeHtml = '';\n    for (var _i2 = 0; _i2 < lineLength; _i2++) {\n      codeHtml += '<div class=\"line\">' + lineCodes[_i2] + '</div>';\n    }\n\n    block.className += ' highlight';\n    var figure = document.createElement('figure');\n    figure.className = block.className;\n    figure.innerHTML = '<table><tbody><tr><td class=\"gutter\"><pre>' + codeLineHtml + '</pre></td><td class=\"code\"><pre>' + codeHtml + '</pre></td></tr></tbody></table>';\n\n    rootElement.parentElement.replaceChild(figure, rootElement);\n  }\n};\n\nEven.beforeToc = function () {\n  var links = document.querySelectorAll('#TableOfContents a');\n  for (var i = 0; i < links.length; i++) {\n    links[i].className += ' toc-link';\n  }for (var num = 1; num <= 6; num++) {\n    var headers = document.querySelectorAll('.post-content>h' + num);\n    for (var _i3 = 0; _i3 < headers.length; _i3++) {\n      var header = headers[_i3];\n      header.innerHTML = '<a href=\"#' + header.id + '\" class=\"headerlink\" title=\"' + header.innerHTML + '\"></a>' + header.innerHTML;\n    }\n  }\n};\n\nexports.Even = Even;\n\n/***/ }),\n/* 2 */\n/***/ (function(module, exports) {\n\n// removed by extract-text-webpack-plugin\n\n/***/ })\n/******/ ]);\n\n\n// WEBPACK FOOTER //\n// even.min.js"," \t// The module cache\n \tvar installedModules = {};\n\n \t// The require function\n \tfunction __webpack_require__(moduleId) {\n\n \t\t// Check if module is in cache\n \t\tif(installedModules[moduleId]) {\n \t\t\treturn installedModules[moduleId].exports;\n \t\t}\n \t\t// Create a new module (and put it into the cache)\n \t\tvar module = installedModules[moduleId] = {\n \t\t\ti: moduleId,\n \t\t\tl: false,\n \t\t\texports: {}\n \t\t};\n\n \t\t// Execute the module function\n \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n \t\t// Flag the module as loaded\n \t\tmodule.l = true;\n\n \t\t// Return the exports of the module\n \t\treturn module.exports;\n \t}\n\n\n \t// expose the modules object (__webpack_modules__)\n \t__webpack_require__.m = modules;\n\n \t// expose the module cache\n \t__webpack_require__.c = installedModules;\n\n \t// define getter function for harmony exports\n \t__webpack_require__.d = function(exports, name, getter) {\n \t\tif(!__webpack_require__.o(exports, name)) {\n \t\t\tObject.defineProperty(exports, name, {\n \t\t\t\tconfigurable: false,\n \t\t\t\tenumerable: true,\n \t\t\t\tget: getter\n \t\t\t});\n \t\t}\n \t};\n\n \t// getDefaultExport function for compatibility with non-harmony modules\n \t__webpack_require__.n = function(module) {\n \t\tvar getter = module && module.__esModule ?\n \t\t\tfunction getDefault() { return module['default']; } :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 0);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap d8a7b1fc0ff317775680","import {Even} from './even.js'\r\n\r\nimport '../css/style.scss'\r\n\r\n$(document).ready(function () {\r\n  Even.backToTop()\r\n  Even.mobileNavbar()\r\n  Even.beforeToc()\r\n  Even.toc()\r\n  Even.fancybox()\r\n})\r\n\r\nhljs.initHighlighting()\r\nEven.highlight()\r\n\n\n\n// WEBPACK FOOTER //\n// ./js/main.js","'use strict'\r\n\r\nvar Even = {}\r\n\r\nEven.backToTop = function () {\r\n  var $backToTop = $('#back-to-top')\r\n\r\n  $(window).scroll(function () {\r\n    if ($(window).scrollTop() > 100) {\r\n      $backToTop.fadeIn(1000)\r\n    } else {\r\n      $backToTop.fadeOut(1000)\r\n    }\r\n  })\r\n\r\n  $backToTop.click(function () {\r\n    $('body,html').animate({ scrollTop: 0 })\r\n  })\r\n}\r\n\r\nEven.mobileNavbar = function () {\r\n  var $mobileNav = $('#mobile-navbar')\r\n  var $mobileNavIcon = $('.mobile-navbar-icon')\r\n  var slideout = new Slideout({\r\n    'panel': document.getElementById('mobile-panel'),\r\n    'menu': document.getElementById('mobile-menu'),\r\n    'padding': 180,\r\n    'tolerance': 70\r\n  })\r\n  slideout.disableTouch()\r\n\r\n  $mobileNavIcon.click(function () {\r\n    slideout.toggle()\r\n  })\r\n\r\n  slideout.on('beforeopen', function () {\r\n    $mobileNav.addClass('fixed-open')\r\n    $mobileNavIcon.addClass('icon-click').removeClass('icon-out')\r\n  })\r\n\r\n  slideout.on('beforeclose', function () {\r\n    $mobileNav.removeClass('fixed-open')\r\n    $mobileNavIcon.addClass('icon-out').removeClass('icon-click')\r\n  })\r\n\r\n  $('#mobile-panel').on('touchend', function () {\r\n    slideout.isOpen() && $mobileNavIcon.click()\r\n  })\r\n}\r\n\r\nEven.toc = function () {\r\n  var SPACING = 20\r\n  var $toc = $('.post-toc')\r\n  var $footer = $('.post-footer')\r\n\r\n  if ($toc.length) {\r\n    var minScrollTop = $toc.offset().top - SPACING\r\n    var maxScrollTop = $footer.offset().top - $toc.height() - SPACING\r\n\r\n    var tocState = {\r\n      start: {\r\n        'position': 'absolute',\r\n        'top': minScrollTop\r\n      },\r\n      process: {\r\n        'position': 'fixed',\r\n        'top': SPACING\r\n      },\r\n      end: {\r\n        'position': 'absolute',\r\n        'top': maxScrollTop\r\n      }\r\n    }\r\n\r\n    $(window).scroll(function () {\r\n      var scrollTop = $(window).scrollTop()\r\n\r\n      if (scrollTop < minScrollTop) {\r\n        $toc.css(tocState.start)\r\n      } else if (scrollTop > maxScrollTop) {\r\n        $toc.css(tocState.end)\r\n      } else {\r\n        $toc.css(tocState.process)\r\n      }\r\n    })\r\n  }\r\n\r\n  var HEADERFIX = 30\r\n  var $toclink = $('.toc-link')\r\n  var $headerlink = $('.headerlink')\r\n\r\n  var headerlinkTop = $.map($headerlink, function (link) {\r\n    return $(link).offset().top\r\n  })\r\n\r\n  $(window).scroll(function () {\r\n    var scrollTop = $(window).scrollTop()\r\n\r\n    for (var i = 0; i < $toclink.length; i++) {\r\n      var isLastOne = i + 1 === $toclink.length\r\n      var currentTop = headerlinkTop[i] - HEADERFIX\r\n      var nextTop = isLastOne ? Infinity : headerlinkTop[i + 1] - HEADERFIX\r\n\r\n      if (currentTop < scrollTop && scrollTop <= nextTop) {\r\n        $($toclink[i]).addClass('active')\r\n      } else {\r\n        $($toclink[i]).removeClass('active')\r\n      }\r\n    }\r\n  })\r\n}\r\n\r\nEven.fancybox = function () {\r\n  if ($.fancybox) {\r\n    $('.post-content').each(function () {\r\n      $(this).find('img').each(function () {\r\n        $(this).wrap(`<a class=\"fancybox\" href=\"${this.src}\" data-fancybox=\"gallery\" data-caption=\"${this.title}\"></a>`)\r\n      })\r\n    })\r\n\r\n    $('.fancybox').fancybox({\r\n      selector: '.fancybox',\r\n      protect: true\r\n    })\r\n  }\r\n}\r\n\r\nEven.highlight = function () {\r\n  const blocks = document.querySelectorAll('pre code')\r\n  for (let i = 0; i < blocks.length; i++) {\r\n    const block = blocks[i]\r\n    const rootElement = block.parentElement\r\n    const lineCodes = block.innerHTML.split(/\\n/).slice(0, -1)\r\n    const lineLength = lineCodes.length\r\n\r\n    let codeLineHtml = ''\r\n    for (let i = 0; i < lineLength; i++) {\r\n      codeLineHtml += `<div class=\"line\">${i + 1}</div>`\r\n    }\r\n\r\n    let codeHtml = ''\r\n    for (let i = 0; i < lineLength; i++) {\r\n      codeHtml += `<div class=\"line\">${lineCodes[i]}</div>`\r\n    }\r\n\r\n    block.className += ' highlight'\r\n    const figure = document.createElement('figure')\r\n    figure.className = block.className\r\n    figure.innerHTML = `<table><tbody><tr><td class=\"gutter\"><pre>${codeLineHtml}</pre></td><td class=\"code\"><pre>${codeHtml}</pre></td></tr></tbody></table>`\r\n\r\n    rootElement.parentElement.replaceChild(figure, rootElement)\r\n  }\r\n}\r\n\r\nEven.beforeToc = function () {\r\n  const links = document.querySelectorAll('#TableOfContents a')\r\n  for (let i = 0; i < links.length; i++) links[i].className += ' toc-link'\r\n\r\n  for (let num = 1; num <= 6; num++) {\r\n    const headers = document.querySelectorAll('.post-content>h' + num)\r\n    for (let i = 0; i < headers.length; i++) {\r\n      const header = headers[i]\r\n      header.innerHTML = `<a href=\"#${header.id}\" class=\"headerlink\" title=\"${header.innerHTML}\"></a>${header.innerHTML}`\r\n    }\r\n  }\r\n}\r\n\r\nexport {Even}\r\n\n\n\n// WEBPACK FOOTER //\n// ./js/even.js"],"sourceRoot":""}
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} :\n \t\t\tfunction getModuleExports() { return module; };\n \t\t__webpack_require__.d(getter, 'a', getter);\n \t\treturn getter;\n \t};\n\n \t// Object.prototype.hasOwnProperty.call\n \t__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(__webpack_require__.s = 0);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap c06dd7a07f13bd2ed3fb","import {Even} from './even.js'\r\n\r\nimport '../css/style.scss'\r\n\r\n$(document).ready(function () {\r\n  Even.backToTop()\r\n  Even.mobileNavbar()\r\n  Even.toc()\r\n  Even.fancybox()\r\n})\r\n\r\nhljs.initHighlighting()\r\nEven.highlight()\r\n\n\n\n// WEBPACK FOOTER //\n// ./js/main.js","'use strict'\r\n\r\nvar Even = {}\r\n\r\nEven.backToTop = function () {\r\n  var $backToTop = $('#back-to-top')\r\n\r\n  $(window).scroll(function () {\r\n    if ($(window).scrollTop() > 100) {\r\n      $backToTop.fadeIn(1000)\r\n    } else {\r\n      $backToTop.fadeOut(1000)\r\n    }\r\n  })\r\n\r\n  $backToTop.click(function () {\r\n    $('body,html').animate({ scrollTop: 0 })\r\n  })\r\n}\r\n\r\nEven.mobileNavbar = function () {\r\n  var $mobileNav = $('#mobile-navbar')\r\n  var $mobileNavIcon = $('.mobile-navbar-icon')\r\n  var slideout = new Slideout({\r\n    'panel': document.getElementById('mobile-panel'),\r\n    'menu': document.getElementById('mobile-menu'),\r\n    'padding': 180,\r\n    'tolerance': 70\r\n  })\r\n  slideout.disableTouch()\r\n\r\n  $mobileNavIcon.click(function () {\r\n    slideout.toggle()\r\n  })\r\n\r\n  slideout.on('beforeopen', function () {\r\n    $mobileNav.addClass('fixed-open')\r\n    $mobileNavIcon.addClass('icon-click').removeClass('icon-out')\r\n  })\r\n\r\n  slideout.on('beforeclose', function () {\r\n    $mobileNav.removeClass('fixed-open')\r\n    $mobileNavIcon.addClass('icon-out').removeClass('icon-click')\r\n  })\r\n\r\n  $('#mobile-panel').on('touchend', function () {\r\n    slideout.isOpen() && $mobileNavIcon.click()\r\n  })\r\n}\r\n\r\nEven._initToc = function () {\r\n  var SPACING = 20\r\n  var $toc = $('.post-toc')\r\n  var $footer = $('.post-footer')\r\n\r\n  if ($toc.length) {\r\n    var minScrollTop = $toc.offset().top - SPACING\r\n    var maxScrollTop = $footer.offset().top - $toc.height() - SPACING\r\n\r\n    var tocState = {\r\n      start: {\r\n        'position': 'absolute',\r\n        'top': minScrollTop\r\n      },\r\n      process: {\r\n        'position': 'fixed',\r\n        'top': SPACING\r\n      },\r\n      end: {\r\n        'position': 'absolute',\r\n        'top': maxScrollTop\r\n      }\r\n    }\r\n\r\n    $(window).scroll(function () {\r\n      var scrollTop = $(window).scrollTop()\r\n\r\n      if (scrollTop < minScrollTop) {\r\n        $toc.css(tocState.start)\r\n      } else if (scrollTop > maxScrollTop) {\r\n        $toc.css(tocState.end)\r\n      } else {\r\n        $toc.css(tocState.process)\r\n      }\r\n    })\r\n  }\r\n\r\n  var HEADERFIX = 30\r\n  var $toclink = $('.toc-link')\r\n  var $headerlink = $('.headerlink')\r\n\r\n  var headerlinkTop = $.map($headerlink, function (link) {\r\n    return $(link).offset().top\r\n  })\r\n\r\n  $(window).scroll(function () {\r\n    var scrollTop = $(window).scrollTop()\r\n\r\n    for (var i = 0; i < $toclink.length; i++) {\r\n      var isLastOne = i + 1 === $toclink.length\r\n      var currentTop = headerlinkTop[i] - HEADERFIX\r\n      var nextTop = isLastOne ? Infinity : headerlinkTop[i + 1] - HEADERFIX\r\n\r\n      if (currentTop < scrollTop && scrollTop <= nextTop) {\r\n        $($toclink[i]).addClass('active')\r\n      } else {\r\n        $($toclink[i]).removeClass('active')\r\n      }\r\n    }\r\n  })\r\n}\r\n\r\nEven.fancybox = function () {\r\n  if ($.fancybox) {\r\n    $('.post-content').each(function () {\r\n      $(this).find('img').each(function () {\r\n        $(this).wrap(`<a class=\"fancybox\" href=\"${this.src}\" data-fancybox=\"gallery\" data-caption=\"${this.title}\"></a>`)\r\n      })\r\n    })\r\n\r\n    $('.fancybox').fancybox({\r\n      selector: '.fancybox',\r\n      protect: true\r\n    })\r\n  }\r\n}\r\n\r\nEven.highlight = function () {\r\n  const blocks = document.querySelectorAll('pre code')\r\n  for (let i = 0; i < blocks.length; i++) {\r\n    const block = blocks[i]\r\n    const rootElement = block.parentElement\r\n    const lineCodes = block.innerHTML.split(/\\n/).slice(0, -1)\r\n    const lineLength = lineCodes.length\r\n\r\n    let codeLineHtml = ''\r\n    for (let i = 0; i < lineLength; i++) {\r\n      codeLineHtml += `<div class=\"line\">${i + 1}</div>`\r\n    }\r\n\r\n    let codeHtml = ''\r\n    for (let i = 0; i < lineLength; i++) {\r\n      codeHtml += `<div class=\"line\">${lineCodes[i]}</div>`\r\n    }\r\n\r\n    block.className += ' highlight'\r\n    const figure = document.createElement('figure')\r\n    figure.className = block.className\r\n    figure.innerHTML = `<table><tbody><tr><td class=\"gutter\"><pre>${codeLineHtml}</pre></td><td class=\"code\"><pre>${codeHtml}</pre></td></tr></tbody></table>`\r\n\r\n    rootElement.parentElement.replaceChild(figure, rootElement)\r\n  }\r\n}\r\n\r\nEven.toc = function () {\r\n  const tocContainer = document.getElementById('post-toc')\r\n  if (tocContainer !== null) {\r\n    const toc = document.getElementById('TableOfContents')\r\n    if (toc === null) {\r\n      // toc = true, but there are no headings\r\n      tocContainer.parentNode.removeChild(tocContainer)\r\n    } else {\r\n      this._linkToc()\r\n      this._initToc()\r\n    }\r\n  }\r\n}\r\n\r\nEven._linkToc = function () {\r\n  const links = document.querySelectorAll('#TableOfContents a')\r\n  for (let i = 0; i < links.length; i++) links[i].className += ' toc-link'\r\n\r\n  for (let num = 1; num <= 6; num++) {\r\n    const headers = document.querySelectorAll('.post-content>h' + num)\r\n    for (let i = 0; i < headers.length; i++) {\r\n      const header = headers[i]\r\n      header.innerHTML = `<a href=\"#${header.id}\" class=\"headerlink\" title=\"${header.innerHTML}\"></a>${header.innerHTML}`\r\n    }\r\n  }\r\n}\r\n\r\nexport {Even}\r\n\n\n\n// WEBPACK FOOTER //\n// ./js/even.js"],"sourceRoot":""}
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