Exclude JS source code from the output

_javascript/commons/topbar-title.js

@@ -0,0 +1,47 @@
+/*
+ * Top bar title auto change while scrolling in mobile screens.
+*/
+
+$(function() {
+
+  const topbarTitle = $("#topbar-title");
+  const postTitle = $("div.post>h1");
+
+  const DEFAULT = topbarTitle.text().trim();
+
+  let title = (postTitle.length > 0) ?
+    postTitle.text().trim() : $("h1").text().trim();
+
+  if ($("#page-category").length || $("#page-tag").length) {
+    /* The title in Category or Tag page will be "<title> <count_of_posts>" */
+    if (/\s/.test(title)) {
+      title = title.replace(/[0-9]/g, "").trim();
+    }
+  }
+
+  /* Replace topbar title while scroll screens. */
+  $(window).scroll(function () {
+    if ($("#post-list").length /* in Home page */
+      || postTitle.is(":hidden") /* is tab pages */
+      || topbarTitle.is(":hidden") /* not mobile screens */
+      || $("#sidebar.sidebar-expand").length) { /* when the sidebar trigger is clicked */
+      return false;
+    }
+
+    if ($(this).scrollTop() >= 95) {
+      if (topbarTitle.text() !== title) {
+        topbarTitle.text(title);
+      }
+    } else {
+      if (topbarTitle.text() !== DEFAULT) {
+        topbarTitle.text(DEFAULT);
+      }
+    }
+  });
+
+  /* Click title remove hover effect. */
+  topbarTitle.click(function() {
+    $("body,html").animate({scrollTop: 0}, 800);
+  });
+
+});