diff --git a/lib/random_number.js b/lib/random_number.js
new file mode 100644
index 0000000..bfd0537
--- /dev/null
+++ b/lib/random_number.js
@@ -0,0 +1,8 @@
+var a = prompt("Enter a first number.");
+var b = prompt("Enter a second number to add to your first number.")
+
+function adding(a, b) {
+  return a + b;
+}
+
+println("The result is " + adding(a, b) + " .")