diff --git a/debugging/debug.js b/debugging/debug.js
new file mode 100644
index 0000000000000000000000000000000000000000..ee25026485ea14b8246d8463263cb79cbff1c8ac
--- /dev/null
+++ b/debugging/debug.js
@@ -0,0 +1,19 @@
+function makeUpperCase(name) {
+if (typeof name !== "string") {
+  throw new Error("Name must be a string");
+}
+else {
+  return name.toUpperCase();
+}
+}
+
+
+try {
+  let result =  makeUpperCase(1223);
+}
+catch (error) {
+    console.log("Da gab es einen Fehler: ", error.message);
+}
+
+
+
diff --git a/index.js b/index.js
index 720dd1472dfde986f52a9efa740e6b1a689151b0..2da89b2dbc1d62110d01a700885abe63414fd2f9 100644
--- a/index.js
+++ b/index.js
@@ -1,19 +1,6 @@
 import data from "./helper/data.js";
 
 
-// function makeUpperCase(name) {
-// if (typeof name !== "string") {
-//   throw new Error("Name must be a string");
-// }
-// else {
-//   return name.toUpperCase();
-// }
-// }
-
-// console.log(makeUpperCase("helmut"));
-// console.log(makeUpperCase(1223));
-
-
 const button = document.getElementsByClassName("main-button")[0];
 
 button.addEventListener("click", () => {