perf: replace jQuery with Vanilla JS (cotes2020#1681)

Also replaced `magnific-popup` with `GLightbox`

_data/origin/basic.yml

@@ -4,9 +4,6 @@ webfonts: /assets/lib/fonts/main.css
 
 # Libraries
 
-jquery:
-  js: /assets/lib/jquery/jquery.min.js
-
 bootstrap:
   css: /assets/lib/bootstrap/bootstrap.min.css
   js: /assets/lib/bootstrap/bootstrap.bundle.min.js
@@ -31,9 +28,9 @@ dayjs:
     relativeTime: /assets/lib/dayjs/plugin/relativeTime.min.js
     localizedFormat: /assets/lib/dayjs/plugin/localizedFormat.min.js
 
-magnific-popup:
-  css: /assets/lib/magnific-popup/magnific-popup.css
-  js: /assets/lib/magnific-popup/jquery.magnific-popup.min.js
+glightbox:
+  css: /assets/lib/glightbox/glightbox.min.css
+  js: /assets/lib/glightbox/glightbox.min.js
 
 lazy-polyfill:
   css: /assets/lib/loading-attribute-polyfill/loading-attribute-polyfill.min.css

_data/origin/cors.yml

@@ -17,9 +17,6 @@ webfonts: https://fonts.googleapis.com/css2?family=Lato:wght@300;400&family=Sour
 
 # Libraries
 
-jquery:
-  js: https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js
-
 bootstrap:
   css: https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css
   js: https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js
@@ -44,9 +41,9 @@ dayjs:
     relativeTime: https://cdn.jsdelivr.net/npm/[email protected]/plugin/relativeTime.min.js
     localizedFormat: https://cdn.jsdelivr.net/npm/[email protected]/plugin/localizedFormat.min.js
 
-magnific-popup:
-  css: https://cdn.jsdelivr.net/npm/[email protected].0/dist/magnific-popup.min.css
-  js: https://cdn.jsdelivr.net/npm/[email protected].0/dist/jquery.magnific-popup.min.js
+glightbox:
+  css: https://cdn.jsdelivr.net/npm/[email protected].0/dist/css/glightbox.min.css
+  js: https://cdn.jsdelivr.net/npm/[email protected].0/dist/js/glightbox.min.js
 
 lazy-polyfill:
   css: https://cdn.jsdelivr.net/npm/[email protected]/dist/loading-attribute-polyfill.min.css

_includes/comments/disqus.html

@@ -28,7 +28,7 @@
     { threshold: [0] }
   );
 
-  disqus_observer.observe(document.querySelector('#disqus_thread'));
+  disqus_observer.observe(document.getElementById('disqus_thread'));
 
   /* Auto switch theme */
   function reloadDisqus() {
@@ -44,7 +44,7 @@
     }
   }
 
-  if (document.querySelector('.mode-toggle')) {
+  if (document.getElementById('mode-toggle')) {
     window.addEventListener('message', reloadDisqus);
   }
 </script>

_includes/comments/giscus.html

@@ -2,7 +2,6 @@
 <script type="text/javascript">
   (function () {
     const origin = 'https://giscus.app';
-    const iframe = 'iframe.giscus-frame';
     const lightTheme = 'light';
     const darkTheme = 'dark_dimmed';
 
@@ -58,7 +57,7 @@
           }
         };
 
-        const giscus = document.querySelector(iframe).contentWindow;
+        const giscus = document.getElementsByClassName('giscus-frame')[0].contentWindow;
         giscus.postMessage({ giscus: message }, origin);
       }
     });

_includes/comments/utterances.html

@@ -10,7 +10,6 @@
 <script type="text/javascript">
   (function () {
     const origin = 'https://utteranc.es';
-    const iframe = 'iframe.utterances-frame';
     const lightTheme = 'github-light';
     const darkTheme = 'github-dark';
     let initTheme = lightTheme;
@@ -43,7 +42,7 @@
         theme: theme
       };
 
-      const utterances = document.querySelector(iframe).contentWindow;
+      const utterances = document.getElementsByClassName('utterances-frame')[0].contentWindow;
       utterances.postMessage(message, origin);
     });
   })();

_includes/head.html

@@ -97,8 +97,8 @@
   {% endif %}
 
   {% if page.layout == 'page' or page.layout == 'post' %}
-    <!-- Manific Popup -->
-    <link rel="stylesheet" href="{{ site.data.origin[type].magnific-popup.css | relative_url }}">
+    <!-- Image Popup -->
+    <link rel="stylesheet" href="{{ site.data.origin[type].glightbox.css | relative_url }}">
   {% endif %}
 
   <!-- JavaScript -->

_includes/js-selector.html

@@ -2,12 +2,9 @@
 
 <!-- commons -->
 
-{% assign urls = site.data.origin[type].jquery.js
-  | append: ','
-  | append: site.data.origin[type].bootstrap.js
-  | append: ','
-  | append: site.data.origin[type].search.js
-%}
+{%- capture urls -%}
+  {{ site.data.origin[type].bootstrap.js }},{{ site.data.origin[type].search.js }}
+{%- endcapture -%}
 
 <!-- layout specified -->
 
@@ -20,7 +17,7 @@
     <!-- image lazy-loading & popup & clipboard -->
     {% assign urls = urls
       | append: ','
-      | append: site.data.origin[type]['magnific-popup'].js
+      | append: site.data.origin[type].glightbox.js
       | append: ','
       | append: site.data.origin[type].clipboard.js
     %}

_includes/mermaid.html

@@ -1,29 +1,31 @@
 <!-- mermaid-js loader -->
 <script type="text/javascript">
-  (function () {
-    function updateMermaid(event) {
-      if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
-        const mode = event.data.message;
-
-        if (typeof mermaid === 'undefined') {
-          return;
-        }
-
-        let expectedTheme = mode === ModeToggle.DARK_MODE ? 'dark' : 'default';
-        let config = { theme: expectedTheme };
-
-        /* Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
-        $('.mermaid').each(function () {
-          let svgCode = $(this).prev().children().html();
-          $(this).removeAttr('data-processed');
-          $(this).html(svgCode);
-        });
-
-        mermaid.initialize(config);
-        mermaid.init(undefined, '.mermaid');
+  function updateMermaid(event) {
+    if (event.source === window && event.data && event.data.direction === ModeToggle.ID) {
+      const mode = event.data.message;
+
+      if (typeof mermaid === 'undefined') {
+        return;
       }
+
+      let expectedTheme = mode === ModeToggle.DARK_MODE ? 'dark' : 'default';
+      let config = { theme: expectedTheme };
+
+      /* Re-render the SVG › <https://github.com/mermaid-js/mermaid/issues/311#issuecomment-332557344> */
+      const mermaidList = document.getElementsByClassName('mermaid');
+
+      [...mermaidList].forEach((elem) => {
+        const svgCode = elem.previousSibling.children.item(0).innerHTML;
+        elem.innerHTML = svgCode;
+        elem.removeAttribute('data-processed');
+      });
+
+      mermaid.initialize(config);
+      mermaid.init(undefined, '.mermaid');
     }
+  }
 
+  (function () {
     let initTheme = 'default';
     const html = document.documentElement;
 
@@ -35,11 +37,12 @@
     }
 
     let mermaidConf = {
-      theme: initTheme /* <default|dark|forest|neutral> */
+      theme: initTheme /* <default | dark | forest | neutral> */
     };
 
     /* Create mermaid tag */
-    document.querySelectorAll('pre>code.language-mermaid').forEach((elem) => {
+    const basicList = document.getElementsByClassName('language-mermaid');
+    [...basicList].forEach((elem) => {
       const svgCode = elem.textContent;
       const backup = elem.parentElement;
       backup.classList.add('unloaded');
@@ -52,7 +55,6 @@
     });
 
     mermaid.initialize(mermaidConf);
-
     window.addEventListener('message', updateMermaid);
   })();
 </script>

_includes/sidebar.html

@@ -44,7 +44,7 @@ <h1 class="site-title">
 
   <div class="sidebar-bottom d-flex flex-wrap  align-items-center w-100">
     {% unless site.theme_mode %}
-      <button type="button" class="mode-toggle btn" aria-label="Switch Mode">
+      <button type="button" class="btn" aria-label="Switch Mode" id="mode-toggle">
         <i class="fas fa-adjust"></i>
       </button>
 

_includes/topbar.html

@@ -59,7 +59,7 @@
       <i class="fas fa-search fa-fw"></i>
     </button>
 
-    <search class="align-items-center ms-3 ms-lg-0">
+    <search id="search" class="align-items-center ms-3 ms-lg-0">
       <i class="fas fa-search fa-fw"></i>
       <input
         class="form-control"

_javascript/modules/components/back-to-top.js

@@ -3,18 +3,17 @@
  */
 
 export function back2top() {
-  const $window = $(window);
-  const $btn = $('#back-to-top');
+  const btn = document.getElementById('back-to-top');
 
-  $window.on('scroll', () => {
-    if ($window.scrollTop() > 50) {
-      $btn.fadeIn();
+  window.addEventListener('scroll', () => {
+    if (window.scrollY > 50) {
+      btn.classList.add('show');
     } else {
-      $btn.fadeOut();
+      btn.classList.remove('show');
     }
   });
 
-  $btn.on('click', () => {
-    $window.scrollTop(0);
+  btn.addEventListener('click', () => {
+    window.scrollTo({ top: 0 });
   });
 }

_javascript/modules/components/category-collapse.js

@@ -3,34 +3,31 @@
  */
 const childPrefix = 'l_';
 const parentPrefix = 'h_';
-const collapse = $('.collapse');
+const children = document.getElementsByClassName('collapse');
 
 export function categoryCollapse() {
-  /* close up top-category */
-  collapse.on('hide.bs.collapse', function () {
-    /* Bootstrap collapse events. */ const parentId =
-      parentPrefix + $(this).attr('id').substring(childPrefix.length);
-    if (parentId) {
-      $(`#${parentId} .far.fa-folder-open`).attr(
-        'class',
-        'far fa-folder fa-fw'
-      );
-      $(`#${parentId} i.fas`).addClass('rotate');
-      $(`#${parentId}`).removeClass('hide-border-bottom');
-    }
-  });
+  [...children].forEach((elem) => {
+    const id = parentPrefix + elem.id.substring(childPrefix.length);
+    const parent = document.getElementById(id);
+
+    // collapse sub-categories
+    elem.addEventListener('hide.bs.collapse', () => {
+      if (parent) {
+        parent.querySelector('.far.fa-folder-open').className =
+          'far fa-folder fa-fw';
+        parent.querySelector('.fas.fa-angle-down').classList.add('rotate');
+        parent.classList.remove('hide-border-bottom');
+      }
+    });
 
-  /* expand the top category */
-  collapse.on('show.bs.collapse', function () {
-    const parentId =
-      parentPrefix + $(this).attr('id').substring(childPrefix.length);
-    if (parentId) {
-      $(`#${parentId} .far.fa-folder`).attr(
-        'class',
-        'far fa-folder-open fa-fw'
-      );
-      $(`#${parentId} i.fas`).removeClass('rotate');
-      $(`#${parentId}`).addClass('hide-border-bottom');
-    }
+    // expand sub-categories
+    elem.addEventListener('show.bs.collapse', () => {
+      if (parent) {
+        parent.querySelector('.far.fa-folder').className =
+          'far fa-folder-open fa-fw';
+        parent.querySelector('.fas.fa-angle-down').classList.remove('rotate');
+        parent.classList.add('hide-border-bottom');
+      }
+    });
   });
 }