diff --git a/_includes/comments/utterances.html b/_includes/comments/utterances.html
index 5fa5760..afd7cd3 100644
--- a/_includes/comments/utterances.html
+++ b/_includes/comments/utterances.html
@@ -14,8 +14,8 @@
     const darkTheme = "github-dark";
     let initTheme = lightTheme;
 
-    if ($("html[mode=dark]").length > 0
-        || ($("html[mode]").length == 0
+    if ($("html[data-mode=dark]").length > 0
+        || ($("html[data-mode]").length == 0
             && window.matchMedia("(prefers-color-scheme: dark)").matches)) {
       initTheme = darkTheme;
     }
diff --git a/_includes/mermaid.html b/_includes/mermaid.html
index b8b6665..e8a0cd4 100644
--- a/_includes/mermaid.html
+++ b/_includes/mermaid.html
@@ -33,8 +33,8 @@
 
     let initTheme = "default";
 
-    if ($("html[mode=dark]").length > 0
-      || ($("html[mode]").length == 0
+    if ($("html[data-mode=dark]").length > 0
+      || ($("html[data-mode]").length == 0
         && window.matchMedia("(prefers-color-scheme: dark)").matches ) ) {
       initTheme = "dark";
     }
diff --git a/_includes/mode-toggle.html b/_includes/mode-toggle.html
index 372b040..63b2538 100644
--- a/_includes/mode-toggle.html
+++ b/_includes/mode-toggle.html
@@ -5,6 +5,7 @@
 <script type="text/javascript">
   class ModeToggle {
     static get MODE_KEY() { return "mode"; }
+    static get MODE_ATTR() { return "data-mode"; }
     static get DARK_MODE() { return "dark"; }
     static get LIGHT_MODE() { return "light"; }
     static get ID() { return "mode-toggle"; }
@@ -70,17 +71,17 @@
     }
 
     setDark() {
-      $('html').attr(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
+      $('html').attr(ModeToggle.MODE_ATTR, ModeToggle.DARK_MODE);
       sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.DARK_MODE);
     }
 
     setLight() {
-      $('html').attr(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
+      $('html').attr(ModeToggle.MODE_ATTR, ModeToggle.LIGHT_MODE);
       sessionStorage.setItem(ModeToggle.MODE_KEY, ModeToggle.LIGHT_MODE);
     }
 
     clearMode() {
-      $('html').removeAttr(ModeToggle.MODE_KEY);
+      $('html').removeAttr(ModeToggle.MODE_ATTR);
       sessionStorage.removeItem(ModeToggle.MODE_KEY);
     }
 
diff --git a/_includes/refactor-content.html b/_includes/refactor-content.html
index 49f1ddc..fefaeba 100644
--- a/_includes/refactor-content.html
+++ b/_includes/refactor-content.html
@@ -165,13 +165,13 @@
       {% endif %}
 
       {% capture _label %}
-        <span label-text="{{ _label_text | strip }}"><i class="{{ _label_icon }}"></i></span>
+        <span data-label-text="{{ _label_text | strip }}"><i class="{{ _label_icon }}"></i></span>
       {% endcapture %}
 
       {% assign _new_content = _new_content | append: _snippet
           | append: '<div class="code-header">'
           | append: _label
-          | append: '<button aria-label="copy" title-succeed="'
+          | append: '<button aria-label="copy" data-title-succeed="'
           | append: site.data.locales[lang].post.button.copy_code.succeed
           | append: '"><i class="far fa-clipboard"></i></button></div>'
           | append: '<div class="highlight"><code>'
diff --git a/_javascript/commons/scroll-helper.js b/_javascript/commons/scroll-helper.js
index 5dc6bd5..7892b08 100644
--- a/_javascript/commons/scroll-helper.js
+++ b/_javascript/commons/scroll-helper.js
@@ -3,7 +3,7 @@
  */
 const ScrollHelper = (function () {
   const $body = $("body");
-  const ATTR_TOPBAR_VISIBLE = "topbar-visible";
+  const ATTR_TOPBAR_VISIBLE = "data-topbar-visible";
   const topbarHeight = $("#topbar-wrapper").outerHeight();
 
   let scrollUpCount = 0; // the number of times the scroll up was triggered by ToC or anchor
diff --git a/_javascript/utils/clipboard.js b/_javascript/utils/clipboard.js
index 9993e09..fb2899d 100644
--- a/_javascript/utils/clipboard.js
+++ b/_javascript/utils/clipboard.js
@@ -10,6 +10,8 @@ $(function() {
   const btnSelector = '.code-header>button';
   const ICON_SUCCESS = 'fas fa-check';
   const ATTR_TIMEOUT = 'timeout';
+  const ATTR_TITLE_SUCCEED = 'data-title-succeed';
+  const ATTR_TITLE_ORIGIN = 'data-original-title';
   const TIMEOUT = 2000; // in milliseconds
 
   function isLocked(node) {
@@ -53,12 +55,12 @@ $(function() {
   const ICON_DEFAULT = getIcon(btnSelector);
 
   function showTooltip(btn) {
-    const succeedTitle = $(btn).attr('title-succeed');
-    $(btn).attr('data-original-title', succeedTitle).tooltip('show');
+    const succeedTitle = $(btn).attr(ATTR_TITLE_SUCCEED);
+    $(btn).attr(ATTR_TITLE_ORIGIN, succeedTitle).tooltip('show');
   }
 
   function hideTooltip(btn) {
-    $(btn).tooltip('hide').removeAttr('data-original-title');
+    $(btn).tooltip('hide').removeAttr(ATTR_TITLE_ORIGIN);
   }
 
   function setSuccessIcon(btn) {
@@ -115,14 +117,14 @@ $(function() {
 
     // Switch tooltip title
 
-    const defaultTitle = target.attr('data-original-title');
-    const succeedTitle = target.attr('title-succeed');
+    const defaultTitle = target.attr(ATTR_TITLE_ORIGIN);
+    const succeedTitle = target.attr(ATTR_TITLE_SUCCEED);
 
-    target.attr('data-original-title', succeedTitle).tooltip('show');
+    target.attr(ATTR_TITLE_ORIGIN, succeedTitle).tooltip('show');
     lock(target);
 
     setTimeout(() => {
-      target.attr('data-original-title', defaultTitle);
+      target.attr(ATTR_TITLE_ORIGIN, defaultTitle);
       unlock(target);
     }, TIMEOUT);
 
diff --git a/_layouts/default.html b/_layouts/default.html
index 99c4d8a..0304a72 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -9,7 +9,7 @@ layout: compress
 
 {% capture prefer_mode %}
   {% if site.theme_mode %}
-    mode="{{ site.theme_mode }}"
+    data-mode="{{ site.theme_mode }}"
   {% endif %}
 {% endcapture %}
 
@@ -21,7 +21,7 @@ layout: compress
     {% include mode-toggle.html %}
   {% endunless %}
 
-  <body data-spy="scroll" data-target="#toc" topbar-visible="true">
+  <body data-spy="scroll" data-target="#toc" data-topbar-visible="true">
 
     {% include sidebar.html %}
 
diff --git a/_sass/addon/commons.scss b/_sass/addon/commons.scss
index ce8f6be..4796dc2 100644
--- a/_sass/addon/commons.scss
+++ b/_sass/addon/commons.scss
@@ -11,22 +11,22 @@
   }
 }
 
-html:not([mode]),
-html[mode=light] {
+html:not([data-mode]),
+html[data-mode=light] {
   @include mode-toggle();
 }
 
-html[mode=dark] {
+html[data-mode=dark] {
   @include mode-toggle(true);
 }
 
 @media (prefers-color-scheme: dark) {
-  html:not([mode]),
-  html[mode=dark] {
+  html:not([data-mode]),
+  html[data-mode=dark] {
     @include mode-toggle(true);
   }
 
-  html[mode=light] {
+  html[data-mode=light] {
     @include mode-toggle();
   }
 }
@@ -247,7 +247,7 @@ img[data-src] {
     }
   }
 
-  [topbar-visible=true] & > div {
+  [data-topbar-visible=true] & > div {
     top: 6rem;
   }
 }
@@ -873,7 +873,7 @@ $sidebar-display: "sidebar-display";
   border-bottom: 1px solid rgba(0, 0, 0, 0.07);
   background-color: var(--topbar-wrapper-bg);
 
-  [topbar-visible=false] & {
+  [data-topbar-visible=false] & {
     top: -$topbar-height; /* same as topbar height. */
   }
 }
@@ -1301,7 +1301,7 @@ $sidebar-display: "sidebar-display";
 } // max-width: 849px
 
 @media all and (max-width: 849px) and (orientation: portrait) {
-  [topbar-visible=false] #topbar-wrapper {
+  [data-topbar-visible=false] #topbar-wrapper {
     top: 0;
   }
 }
diff --git a/_sass/addon/syntax.scss b/_sass/addon/syntax.scss
index bff740b..6ace78d 100644
--- a/_sass/addon/syntax.scss
+++ b/_sass/addon/syntax.scss
@@ -5,22 +5,22 @@
 @import "colors/light-syntax";
 @import "colors/dark-syntax";
 
-html:not([mode]),
-html[mode=light] {
+html:not([data-mode]),
+html[data-mode=light] {
   @include light-syntax;
 }
 
-html[mode=dark] {
+html[data-mode=dark] {
   @include dark-syntax;
 }
 
 @media (prefers-color-scheme: dark) {
-  html:not([mode]),
-  html[mode=dark] {
+  html:not([data-mode]),
+  html[data-mode=dark] {
     @include dark-syntax;
   }
 
-  html[mode=light] {
+  html[data-mode=light] {
     @include light-syntax;
   }
 }
@@ -206,7 +206,7 @@ div {
 
     // label text
     &::after {
-      content: attr(label-text);
+      content: attr(data-label-text);
       font-size: 0.85rem;
       font-weight: 600;
       color: var(--code-header-text-color);
diff --git a/assets/js/dist/categories.min.js b/assets/js/dist/categories.min.js
index 72ce62c..ea5bb0d 100644
--- a/assets/js/dist/categories.min.js
+++ b/assets/js/dist/categories.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(o=>{const e=$(o.target);let t=e.prop("tagName")==="button".toUpperCase()?e:e.parent();t.blur(),flipMode()})});const ScrollHelper=function(){const o=$("body"),e="topbar-visible",t=$("#topbar-wrapper").outerHeight();let l=0,a=!1,r=!1;return{hideTopbar:()=>o.attr(e,!1),showTopbar:()=>o.attr(e,!0),addScrollUpTask:()=>{l+=1,a=a||!0},popScrollUpTask:()=>--l,hasScrollUpTask:()=>0<l,topbarLocked:()=>!0===a,unlockTopbar:()=>a=!1,getTopbarHeight:()=>t,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const o=$("#sidebar-trigger"),e=$("#search-trigger"),t=$("#search-cancel"),l=$("#search-cleaner"),a=$("#main"),r=$("#topbar-title"),s=$("#search-wrapper"),n=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let o=0;return{block(){o=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(o)},getOffset(){return o}}}(),f={on(){o.addClass("unloaded"),r.addClass("unloaded"),e.addClass("unloaded"),s.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),s.removeClass("d-flex"),o.removeClass("unloaded"),r.removeClass("unloaded"),e.removeClass("unloaded")}},u=function(){let o=!1;return{on(){o||(p.block(),n.removeClass("unloaded"),a.addClass("unloaded"),o=!0)},off(){o&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),n.addClass("unloaded"),l.removeClass("visible"),a.removeClass("unloaded"),p.release(),c.val(""),o=!1)},isVisible(){return o}}}();function h(){return t.hasClass("loaded")}e.click(function(){f.on(),u.on(),c.focus()}),t.click(function(){f.off(),u.off()}),c.focus(function(){s.addClass("input-focus")}),c.focusout(function(){s.removeClass("input-focus")}),c.on("keyup",function(o){8===o.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):u.off():""!==c.val()&&(u.on(),l.hasClass("visible")||l.addClass("visible"),h()&&d.addClass("unloaded"))}),l.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):u.off(),c.focus(),l.removeClass("visible")})}),$(function(){var o=function(){const o="sidebar-display";let e=!1;const t=$("body");return{toggle(){!1===e?t.attr(o,""):t.removeAttr(o),e=!e}}}();$("#sidebar-trigger").click(o.toggle),$("#mask").click(o.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const e=$("#search-input"),t=ScrollHelper.getTopbarHeight();let o,l=0;function a(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var o=screen.orientation.type;"landscape-primary"!==o&&"landscape-secondary"!==o||a()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&a()}),$(window).scroll(()=>{o=o||!0}),setInterval(()=>{o&&(function(){var o=$(this).scrollTop();if(!(Math.abs(l-o)<=t)){if(o>l)ScrollHelper.hideTopbar(),e.is(":focus")&&e.blur();else if(o+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}l=o}}(),o=!1)},250)}),$(function(){var e="div.post>h1:first-of-type";const t=$(e),s=$("#topbar-title");if(0!==t.length&&!t.hasClass("dynamic-title")&&!s.is(":hidden")){const n=s.text().trim();let l=t.text().trim(),a=!1,r=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(l)&&(l=l.replace(/[0-9]/g,"").trim()),t.offset().top<$(window).scrollTop()&&s.text(l);let o=new IntersectionObserver(o=>{var e,t;a?(e=$(window).scrollTop(),t=r<e,r=e,o=o[0],t?0===o.intersectionRatio&&s.text(l):1===o.intersectionRatio&&s.text(n)):a=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});o.observe(document.querySelector(e)),s.click(function(){$("body,html").animate({scrollTop:0},800)})}}),$(function(){const o=$(".collapse");o.on("hide.bs.collapse",function(){var o="h_"+$(this).attr("id").substring("l_".length);o&&($(`#${o} .far.fa-folder-open`).attr("class","far fa-folder fa-fw"),$(`#${o} i.fas`).addClass("rotate"),$("#"+o).removeClass("hide-border-bottom"))}),o.on("show.bs.collapse",function(){var o="h_"+$(this).attr("id").substring("l_".length);o&&($(`#${o} .far.fa-folder`).attr("class","far fa-folder-open fa-fw"),$(`#${o} i.fas`).removeClass("rotate"),$("#"+o).addClass("hide-border-bottom"))})});
\ No newline at end of file
+$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(o=>{const e=$(o.target);let t=e.prop("tagName")==="button".toUpperCase()?e:e.parent();t.blur(),flipMode()})});const ScrollHelper=function(){const o=$("body"),e="data-topbar-visible",t=$("#topbar-wrapper").outerHeight();let l=0,a=!1,r=!1;return{hideTopbar:()=>o.attr(e,!1),showTopbar:()=>o.attr(e,!0),addScrollUpTask:()=>{l+=1,a=a||!0},popScrollUpTask:()=>--l,hasScrollUpTask:()=>0<l,topbarLocked:()=>!0===a,unlockTopbar:()=>a=!1,getTopbarHeight:()=>t,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const o=$("#sidebar-trigger"),e=$("#search-trigger"),t=$("#search-cancel"),l=$("#search-cleaner"),a=$("#main"),r=$("#topbar-title"),s=$("#search-wrapper"),n=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let o=0;return{block(){o=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(o)},getOffset(){return o}}}(),f={on(){o.addClass("unloaded"),r.addClass("unloaded"),e.addClass("unloaded"),s.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),s.removeClass("d-flex"),o.removeClass("unloaded"),r.removeClass("unloaded"),e.removeClass("unloaded")}},u=function(){let o=!1;return{on(){o||(p.block(),n.removeClass("unloaded"),a.addClass("unloaded"),o=!0)},off(){o&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),n.addClass("unloaded"),l.removeClass("visible"),a.removeClass("unloaded"),p.release(),c.val(""),o=!1)},isVisible(){return o}}}();function h(){return t.hasClass("loaded")}e.click(function(){f.on(),u.on(),c.focus()}),t.click(function(){f.off(),u.off()}),c.focus(function(){s.addClass("input-focus")}),c.focusout(function(){s.removeClass("input-focus")}),c.on("keyup",function(o){8===o.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):u.off():""!==c.val()&&(u.on(),l.hasClass("visible")||l.addClass("visible"),h()&&d.addClass("unloaded"))}),l.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):u.off(),c.focus(),l.removeClass("visible")})}),$(function(){var o=function(){const o="sidebar-display";let e=!1;const t=$("body");return{toggle(){!1===e?t.attr(o,""):t.removeAttr(o),e=!e}}}();$("#sidebar-trigger").click(o.toggle),$("#mask").click(o.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const e=$("#search-input"),t=ScrollHelper.getTopbarHeight();let o,l=0;function a(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var o=screen.orientation.type;"landscape-primary"!==o&&"landscape-secondary"!==o||a()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&a()}),$(window).scroll(()=>{o=o||!0}),setInterval(()=>{o&&(function(){var o=$(this).scrollTop();if(!(Math.abs(l-o)<=t)){if(o>l)ScrollHelper.hideTopbar(),e.is(":focus")&&e.blur();else if(o+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}l=o}}(),o=!1)},250)}),$(function(){var e="div.post>h1:first-of-type";const t=$(e),s=$("#topbar-title");if(0!==t.length&&!t.hasClass("dynamic-title")&&!s.is(":hidden")){const n=s.text().trim();let l=t.text().trim(),a=!1,r=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(l)&&(l=l.replace(/[0-9]/g,"").trim()),t.offset().top<$(window).scrollTop()&&s.text(l);let o=new IntersectionObserver(o=>{var e,t;a?(e=$(window).scrollTop(),t=r<e,r=e,o=o[0],t?0===o.intersectionRatio&&s.text(l):1===o.intersectionRatio&&s.text(n)):a=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});o.observe(document.querySelector(e)),s.click(function(){$("body,html").animate({scrollTop:0},800)})}}),$(function(){const o=$(".collapse");o.on("hide.bs.collapse",function(){var o="h_"+$(this).attr("id").substring("l_".length);o&&($(`#${o} .far.fa-folder-open`).attr("class","far fa-folder fa-fw"),$(`#${o} i.fas`).addClass("rotate"),$("#"+o).removeClass("hide-border-bottom"))}),o.on("show.bs.collapse",function(){var o="h_"+$(this).attr("id").substring("l_".length);o&&($(`#${o} .far.fa-folder`).attr("class","far fa-folder-open fa-fw"),$(`#${o} i.fas`).removeClass("rotate"),$("#"+o).addClass("hide-border-bottom"))})});
\ No newline at end of file
diff --git a/assets/js/dist/commons.min.js b/assets/js/dist/commons.min.js
index 4f29516..5b11198 100644
--- a/assets/js/dist/commons.min.js
+++ b/assets/js/dist/commons.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const o=$(e.target);let t=o.prop("tagName")==="button".toUpperCase()?o:o.parent();t.blur(),flipMode()})});const ScrollHelper=function(){const e=$("body"),o="topbar-visible",t=$("#topbar-wrapper").outerHeight();let l=0,r=!1,a=!1;return{hideTopbar:()=>e.attr(o,!1),showTopbar:()=>e.attr(o,!0),addScrollUpTask:()=>{l+=1,r=r||!0},popScrollUpTask:()=>--l,hasScrollUpTask:()=>0<l,topbarLocked:()=>!0===r,unlockTopbar:()=>r=!1,getTopbarHeight:()=>t,orientationLocked:()=>!0===a,lockOrientation:()=>a=!0,unLockOrientation:()=>a=!1}}();$(function(){const e=$("#sidebar-trigger"),o=$("#search-trigger"),t=$("#search-cancel"),l=$("#search-cleaner"),r=$("#main"),a=$("#topbar-title"),n=$("#search-wrapper"),s=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset(){return e}}}(),u={on(){e.addClass("unloaded"),a.addClass("unloaded"),o.addClass("unloaded"),n.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),a.removeClass("unloaded"),o.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(p.block(),s.removeClass("unloaded"),r.addClass("unloaded"),e=!0)},off(){e&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),s.addClass("unloaded"),l.removeClass("visible"),r.removeClass("unloaded"),p.release(),c.val(""),e=!1)},isVisible(){return e}}}();function h(){return t.hasClass("loaded")}o.click(function(){u.on(),f.on(),c.focus()}),t.click(function(){u.off(),f.off()}),c.focus(function(){n.addClass("input-focus")}),c.focusout(function(){n.removeClass("input-focus")}),c.on("keyup",function(e){8===e.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):f.off():""!==c.val()&&(f.on(),l.hasClass("visible")||l.addClass("visible"),h()&&d.addClass("unloaded"))}),l.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):f.off(),c.focus(),l.removeClass("visible")})}),$(function(){var e=function(){const e="sidebar-display";let o=!1;const t=$("body");return{toggle(){!1===o?t.attr(e,""):t.removeAttr(e),o=!o}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const o=$("#search-input"),t=ScrollHelper.getTopbarHeight();let e,l=0;function r(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var e=screen.orientation.type;"landscape-primary"!==e&&"landscape-secondary"!==e||r()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&r()}),$(window).scroll(()=>{e=e||!0}),setInterval(()=>{e&&(function(){var e=$(this).scrollTop();if(!(Math.abs(l-e)<=t)){if(e>l)ScrollHelper.hideTopbar(),o.is(":focus")&&o.blur();else if(e+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}l=e}}(),e=!1)},250)}),$(function(){var o="div.post>h1:first-of-type";const t=$(o),n=$("#topbar-title");if(0!==t.length&&!t.hasClass("dynamic-title")&&!n.is(":hidden")){const s=n.text().trim();let l=t.text().trim(),r=!1,a=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(l)&&(l=l.replace(/[0-9]/g,"").trim()),t.offset().top<$(window).scrollTop()&&n.text(l);let e=new IntersectionObserver(e=>{var o,t;r?(o=$(window).scrollTop(),t=a<o,a=o,e=e[0],t?0===e.intersectionRatio&&n.text(l):1===e.intersectionRatio&&n.text(s)):r=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});e.observe(document.querySelector(o)),n.click(function(){$("body,html").animate({scrollTop:0},800)})}});
\ No newline at end of file
+$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const o=$(e.target);let t=o.prop("tagName")==="button".toUpperCase()?o:o.parent();t.blur(),flipMode()})});const ScrollHelper=function(){const e=$("body"),o="data-topbar-visible",t=$("#topbar-wrapper").outerHeight();let l=0,a=!1,r=!1;return{hideTopbar:()=>e.attr(o,!1),showTopbar:()=>e.attr(o,!0),addScrollUpTask:()=>{l+=1,a=a||!0},popScrollUpTask:()=>--l,hasScrollUpTask:()=>0<l,topbarLocked:()=>!0===a,unlockTopbar:()=>a=!1,getTopbarHeight:()=>t,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const e=$("#sidebar-trigger"),o=$("#search-trigger"),t=$("#search-cancel"),l=$("#search-cleaner"),a=$("#main"),r=$("#topbar-title"),n=$("#search-wrapper"),s=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset(){return e}}}(),u={on(){e.addClass("unloaded"),r.addClass("unloaded"),o.addClass("unloaded"),n.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),r.removeClass("unloaded"),o.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(p.block(),s.removeClass("unloaded"),a.addClass("unloaded"),e=!0)},off(){e&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),s.addClass("unloaded"),l.removeClass("visible"),a.removeClass("unloaded"),p.release(),c.val(""),e=!1)},isVisible(){return e}}}();function h(){return t.hasClass("loaded")}o.click(function(){u.on(),f.on(),c.focus()}),t.click(function(){u.off(),f.off()}),c.focus(function(){n.addClass("input-focus")}),c.focusout(function(){n.removeClass("input-focus")}),c.on("keyup",function(e){8===e.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):f.off():""!==c.val()&&(f.on(),l.hasClass("visible")||l.addClass("visible"),h()&&d.addClass("unloaded"))}),l.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):f.off(),c.focus(),l.removeClass("visible")})}),$(function(){var e=function(){const e="sidebar-display";let o=!1;const t=$("body");return{toggle(){!1===o?t.attr(e,""):t.removeAttr(e),o=!o}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const o=$("#search-input"),t=ScrollHelper.getTopbarHeight();let e,l=0;function a(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var e=screen.orientation.type;"landscape-primary"!==e&&"landscape-secondary"!==e||a()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&a()}),$(window).scroll(()=>{e=e||!0}),setInterval(()=>{e&&(function(){var e=$(this).scrollTop();if(!(Math.abs(l-e)<=t)){if(e>l)ScrollHelper.hideTopbar(),o.is(":focus")&&o.blur();else if(e+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}l=e}}(),e=!1)},250)}),$(function(){var o="div.post>h1:first-of-type";const t=$(o),n=$("#topbar-title");if(0!==t.length&&!t.hasClass("dynamic-title")&&!n.is(":hidden")){const s=n.text().trim();let l=t.text().trim(),a=!1,r=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(l)&&(l=l.replace(/[0-9]/g,"").trim()),t.offset().top<$(window).scrollTop()&&n.text(l);let e=new IntersectionObserver(e=>{var o,t;a?(o=$(window).scrollTop(),t=r<o,r=o,e=e[0],t?0===e.intersectionRatio&&n.text(l):1===e.intersectionRatio&&n.text(s)):a=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});e.observe(document.querySelector(o)),n.click(function(){$("body,html").animate({scrollTop:0},800)})}});
\ No newline at end of file
diff --git a/assets/js/dist/home.min.js b/assets/js/dist/home.min.js
index 7ee08f4..19f48b2 100644
--- a/assets/js/dist/home.min.js
+++ b/assets/js/dist/home.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const t=$(e.target);let o=t.prop("tagName")==="button".toUpperCase()?t:t.parent();o.blur(),flipMode()})});const ScrollHelper=function(){const e=$("body"),t="topbar-visible",o=$("#topbar-wrapper").outerHeight();let a=0,l=!1,r=!1;return{hideTopbar:()=>e.attr(t,!1),showTopbar:()=>e.attr(t,!0),addScrollUpTask:()=>{a+=1,l=l||!0},popScrollUpTask:()=>--a,hasScrollUpTask:()=>0<a,topbarLocked:()=>!0===l,unlockTopbar:()=>l=!1,getTopbarHeight:()=>o,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const e=$("#sidebar-trigger"),t=$("#search-trigger"),o=$("#search-cancel"),a=$("#search-cleaner"),l=$("#main"),r=$("#topbar-title"),n=$("#search-wrapper"),s=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset(){return e}}}(),u={on(){e.addClass("unloaded"),r.addClass("unloaded"),t.addClass("unloaded"),n.addClass("d-flex"),o.addClass("loaded")},off(){o.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),r.removeClass("unloaded"),t.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(p.block(),s.removeClass("unloaded"),l.addClass("unloaded"),e=!0)},off(){e&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),s.addClass("unloaded"),a.removeClass("visible"),l.removeClass("unloaded"),p.release(),c.val(""),e=!1)},isVisible(){return e}}}();function h(){return o.hasClass("loaded")}t.click(function(){u.on(),f.on(),c.focus()}),o.click(function(){u.off(),f.off()}),c.focus(function(){n.addClass("input-focus")}),c.focusout(function(){n.removeClass("input-focus")}),c.on("keyup",function(e){8===e.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):f.off():""!==c.val()&&(f.on(),a.hasClass("visible")||a.addClass("visible"),h()&&d.addClass("unloaded"))}),a.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):f.off(),c.focus(),a.removeClass("visible")})}),$(function(){var e=function(){const e="sidebar-display";let t=!1;const o=$("body");return{toggle(){!1===t?o.attr(e,""):o.removeAttr(e),t=!t}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const t=$("#search-input"),o=ScrollHelper.getTopbarHeight();let e,a=0;function l(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var e=screen.orientation.type;"landscape-primary"!==e&&"landscape-secondary"!==e||l()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&l()}),$(window).scroll(()=>{e=e||!0}),setInterval(()=>{e&&(function(){var e=$(this).scrollTop();if(!(Math.abs(a-e)<=o)){if(e>a)ScrollHelper.hideTopbar(),t.is(":focus")&&t.blur();else if(e+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}a=e}}(),e=!1)},250)}),$(function(){var t="div.post>h1:first-of-type";const o=$(t),n=$("#topbar-title");if(0!==o.length&&!o.hasClass("dynamic-title")&&!n.is(":hidden")){const s=n.text().trim();let a=o.text().trim(),l=!1,r=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(a)&&(a=a.replace(/[0-9]/g,"").trim()),o.offset().top<$(window).scrollTop()&&n.text(a);let e=new IntersectionObserver(e=>{var t,o;l?(t=$(window).scrollTop(),o=r<t,r=t,e=e[0],o?0===e.intersectionRatio&&n.text(a):1===e.intersectionRatio&&n.text(s)):l=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});e.observe(document.querySelector(t)),n.click(function(){$("body,html").animate({scrollTop:0},800)})}}),$(function(){let o=$(".timeago").length,e=void 0;const l=$("meta[name=day-prompt]").attr("content"),r=$("meta[name=hour-prompt]").attr("content"),n=$("meta[name=minute-prompt]").attr("content"),s=$("meta[name=justnow-prompt]").attr("content");function t(){return $(".timeago").each(function(){var e,t;!1!==$(this)[0].hasAttribute("date")?(t=function(e,t){let o=new Date,a=new Date(e);return a.getFullYear()!==o.getFullYear()||a.getMonth()!==o.getMonth()?t:(e=Math.floor((o-a)/1e3),1<=(t=Math.floor(e/86400))?` ${t} `+l:1<=(t=Math.floor(e/3600))?` ${t} `+r:1<=(e=Math.floor(e/60))?` ${e} `+n:s)}($(this).attr("date"),e=$(this).text()))===e?$(this).removeAttr("date"):$(this).text(t):--o}),0===o&&void 0!==e&&clearInterval(e),o}0!==o&&0<t()&&(e=setInterval(t,6e4))});
\ No newline at end of file
+$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const t=$(e.target);let o=t.prop("tagName")==="button".toUpperCase()?t:t.parent();o.blur(),flipMode()})});const ScrollHelper=function(){const e=$("body"),t="data-topbar-visible",o=$("#topbar-wrapper").outerHeight();let a=0,l=!1,r=!1;return{hideTopbar:()=>e.attr(t,!1),showTopbar:()=>e.attr(t,!0),addScrollUpTask:()=>{a+=1,l=l||!0},popScrollUpTask:()=>--a,hasScrollUpTask:()=>0<a,topbarLocked:()=>!0===l,unlockTopbar:()=>l=!1,getTopbarHeight:()=>o,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const e=$("#sidebar-trigger"),t=$("#search-trigger"),o=$("#search-cancel"),a=$("#search-cleaner"),l=$("#main"),r=$("#topbar-title"),n=$("#search-wrapper"),s=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),p=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset(){return e}}}(),u={on(){e.addClass("unloaded"),r.addClass("unloaded"),t.addClass("unloaded"),n.addClass("d-flex"),o.addClass("loaded")},off(){o.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),r.removeClass("unloaded"),t.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(p.block(),s.removeClass("unloaded"),l.addClass("unloaded"),e=!0)},off(){e&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),s.addClass("unloaded"),a.removeClass("visible"),l.removeClass("unloaded"),p.release(),c.val(""),e=!1)},isVisible(){return e}}}();function h(){return o.hasClass("loaded")}t.click(function(){u.on(),f.on(),c.focus()}),o.click(function(){u.off(),f.off()}),c.focus(function(){n.addClass("input-focus")}),c.focusout(function(){n.removeClass("input-focus")}),c.on("keyup",function(e){8===e.keyCode&&""===c.val()?h()?d.removeClass("unloaded"):f.off():""!==c.val()&&(f.on(),a.hasClass("visible")||a.addClass("visible"),h()&&d.addClass("unloaded"))}),a.on("click",function(){c.val(""),h()?(d.removeClass("unloaded"),i.empty()):f.off(),c.focus(),a.removeClass("visible")})}),$(function(){var e=function(){const e="sidebar-display";let t=!1;const o=$("body");return{toggle(){!1===t?o.attr(e,""):o.removeAttr(e),t=!t}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const t=$("#search-input"),o=ScrollHelper.getTopbarHeight();let e,a=0;function l(){0!==$(window).scrollTop()&&(ScrollHelper.lockOrientation(),ScrollHelper.hideTopbar())}screen.orientation?screen.orientation.onchange=()=>{var e=screen.orientation.type;"landscape-primary"!==e&&"landscape-secondary"!==e||l()}:$(window).on("orientationchange",()=>{$(window).width()<$(window).height()&&l()}),$(window).scroll(()=>{e=e||!0}),setInterval(()=>{e&&(function(){var e=$(this).scrollTop();if(!(Math.abs(a-e)<=o)){if(e>a)ScrollHelper.hideTopbar(),t.is(":focus")&&t.blur();else if(e+$(window).height()<$(document).height()){if(ScrollHelper.hasScrollUpTask())return;ScrollHelper.topbarLocked()?ScrollHelper.unlockTopbar():ScrollHelper.orientationLocked()?ScrollHelper.unLockOrientation():ScrollHelper.showTopbar()}a=e}}(),e=!1)},250)}),$(function(){var t="div.post>h1:first-of-type";const o=$(t),n=$("#topbar-title");if(0!==o.length&&!o.hasClass("dynamic-title")&&!n.is(":hidden")){const s=n.text().trim();let a=o.text().trim(),l=!1,r=0;($("#page-category").length||$("#page-tag").length)&&/\s/.test(a)&&(a=a.replace(/[0-9]/g,"").trim()),o.offset().top<$(window).scrollTop()&&n.text(a);let e=new IntersectionObserver(e=>{var t,o;l?(t=$(window).scrollTop(),o=r<t,r=t,e=e[0],o?0===e.intersectionRatio&&n.text(a):1===e.intersectionRatio&&n.text(s)):l=!0},{rootMargin:"-48px 0px 0px 0px",threshold:[0,1]});e.observe(document.querySelector(t)),n.click(function(){$("body,html").animate({scrollTop:0},800)})}}),$(function(){let o=$(".timeago").length,e=void 0;const l=$("meta[name=day-prompt]").attr("content"),r=$("meta[name=hour-prompt]").attr("content"),n=$("meta[name=minute-prompt]").attr("content"),s=$("meta[name=justnow-prompt]").attr("content");function t(){return $(".timeago").each(function(){var e,t;!1!==$(this)[0].hasAttribute("date")?(t=function(e,t){let o=new Date,a=new Date(e);return a.getFullYear()!==o.getFullYear()||a.getMonth()!==o.getMonth()?t:(e=Math.floor((o-a)/1e3),1<=(t=Math.floor(e/86400))?` ${t} `+l:1<=(t=Math.floor(e/3600))?` ${t} `+r:1<=(e=Math.floor(e/60))?` ${e} `+n:s)}($(this).attr("date"),e=$(this).text()))===e?$(this).removeAttr("date"):$(this).text(t):--o}),0===o&&void 0!==e&&clearInterval(e),o}0!==o&&0<t()&&(e=setInterval(t,6e4))});
\ No newline at end of file
diff --git a/assets/js/dist/page.min.js b/assets/js/dist/page.min.js
index b012afc..c796fa0 100644
--- a/assets/js/dist/page.min.js
+++ b/assets/js/dist/page.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-$(function(){$(window).scroll(()=>{50<$(this).scrollTop()&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){$(".mode-toggle").click(e=>{const t=$(e.target);let o=t.prop("tagName")==="button".toUpperCase()?t:t.parent();o.blur(),flipMode()})});const ScrollHelper=function(){const e=$("body"),t="topbar-visible",o=$("#topbar-wrapper").outerHeight();let l=0,a=!1,r=!1;return{hideTopbar:()=>e.attr(t,!1),showTopbar:()=>e.attr(t,!0),addScrollUpTask:()=>{l+=1,a=a||!0},popScrollUpTask:()=>--l,hasScrollUpTask:()=>0<l,topbarLocked:()=>!0===a,unlockTopbar:()=>a=!1,getTopbarHeight:()=>o,orientationLocked:()=>!0===r,lockOrientation:()=>r=!0,unLockOrientation:()=>r=!1}}();$(function(){const 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diff --git a/assets/js/dist/post.min.js b/assets/js/dist/post.min.js
index 67e97ec..517122c 100644
--- a/assets/js/dist/post.min.js
+++ b/assets/js/dist/post.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
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