improve code

src/Library/demos/Scale/main.js

@@ -1,34 +1,32 @@
+import Gtk from "gi://Gtk";
+
 const scale_one = workbench.builder.get_object("one");
 const scale_two = workbench.builder.get_object("two");
 
-function logMarks(scale_value_two) {
-  const marks = {
-    25: "Mark A Reached",
-    50: "Mark B Reached",
-    75: "Mark C Reached",
-    100: "Mark D Reached",
-  };
-  if (scale_value_two in marks) {
-    console.log(marks[scale_value_two]);
-  }
-}
+const marks = {
+  0: "A",
+  50: "B",
+  100: "C",
+};
 
-scale_two.add_mark(25.0, "left", "A");
-scale_two.add_mark(50.0, "right", "B");
-scale_two.add_mark(75.0, "right", "C");
-scale_two.add_mark(100.0, "right", "D");
-scale_two.set_increments(25.0, 25.0);
+for (const [value, label] of Object.entries(marks)) {
+  scale_two.add_mark(value, Gtk.PositionType.RIGHT, label);
+}
+scale_two.set_increments(25, 100);
 
 scale_one.connect("value-changed", () => {
-  let scale_value = scale_one.get_value();
+  const scale_value = scale_one.get_value();
   if (scale_value === scale_one.adjustment.upper) {
-    console.log("Maximum Value Reached");
+    console.log("Maximum value reached");
   } else if (scale_value === scale_one.adjustment.lower) {
-    console.log("Minimum Value Reached");
+    console.log("Minimum value reached");
   }
 });
 
 scale_two.connect("value-changed", () => {
-  let scale_value_two = scale_two.get_value();
-  logMarks(scale_value_two);
+  const scale_value = scale_two.get_value();
+  const label = marks[scale_value];
+  if (!label) return;
+
+  console.log(`Mark ${label} reached`);
 });