0.js

Author: Abayie

Sprint-2/1-key-errors/0.js

@@ -1,5 +1,8 @@
 // Predict and explain first...
-//  =============> write your prediction here
+//  =============> write your prediction here => This code will throw a syntax error 
+// because the parameter str is redeclared as a let variable inside the function, which is not allowed.
+
+
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
@@ -9,5 +12,12 @@ function capitalise(str) {
   return str;
 }
 
-// =============> write your explanation here
+// =============> write your explanation here => The error occurs because you cannot declare 
+// a new variable with the same name as a function parameter (str) using let inside the function. 
+// This causes a "Identifier 'str' has already been declared" error.
+
+
 // =============> write your new code here
+function capitalise(str) {
+  return `${str[0].toUpperCase()}${str.slice(1)}`;
+}