New version plus look.

src/scripts/searchTabs.js

@@ -0,0 +1,38 @@
+function findTabs(tabs) {
+    var selection = [];
+
+    clearNodes(listZone);
+    if (searchBar.value != "") {
+        for (let tab of tabs) {
+            var title = tab.title;
+            if (title.toLowerCase().includes(searchBar.value.toLowerCase())) {
+                selection.push(tab);
+            }
+        }
+        if (selection.length > 1) {
+            for (let sel of selection) {
+                createContainer(sel)
+            }
+            errHandler.style.display = "none";
+            clearNodes(errHandler);
+        } else {
+            if (selection[0] != undefined) {
+                errHandler.style.display = "none";
+                clearNodes(errHandler);
+                loadSelTab(selection[0].id);
+            } else {
+                errHandler.style.display = "block";
+                errHandler.appendChild(notFoundText);
+            }
+        }
+    } else { logTabs(tabs); }
+}
+
+function clearNodes(targetNode) {
+    while (targetNode.firstChild) {
+        targetNode.removeChild(targetNode.firstChild);
+    }
+}
+
+function loadSelTab(id) { browser.tabs.update(id, { active: true }); }
+function searchTabs() { tabQuery.then(findTabs, onError); }