Fixed capitaliseStr function and confirmed output with test

Author: Eugenie-A

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

@@ -1,13 +1,29 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// Prediction: The code will throw a SyntaxError because the variable 'str' has already been declared as a parameter of the function.
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
+// Original code with error:
+
+/*
 function capitalise(str) {
   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
+  */
 
 // =============> write your explanation here
+// Explanation: The error occurs because the variable 'str' is being redeclared within the function using 'let', 
+// which is not allowed since 'str' is already declared as a parameter of the function. 
+// To fix this, we can either rename the inner variable or simply assign the new value to the existing parameter without redeclaring it.
+
 // =============> write your new code here
+// Fixed code:
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+
+console.log(capitalise("hello")); // Output: "Hello"