update: Fix variable redeclaration error in capitalise function and update comments for clarity Sprint-2/1-key-errors/0.js

Author: SuWebOnes

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

@@ -4,10 +4,25 @@
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
 
-function capitalise(str) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
-  return str;
-}
+// function capitalise(str) {
+//   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+//   return str;
+// }
 
 // =============> write your explanation here
+// The function capitalize is trying to take a string input and return it with the first letter capitalized.
+// However, the error occurs because the variable 'str' is being declared twice: once as a parameter and again inside the function.
+// This is not allowed in JavaScript, as 'let' does not allow redeclaration of the same variable in the same scope.
+// This causes a syntax error because you cannot redeclare a variable with 'let' in the same scope.
 // =============> write your new code here
+
+function capitalise(str) {
+  let name = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return name;
+}
+capitalise("hello, check ");
+console.log(capitalise("hello, check "));
+// =============> write your explanation here
+// The function now uses a different variable name 'name' instead of 'str' inside the function.
+// This avoids the redeclaration error. The function takes a string input, capitalizes the first letter, and returns the modified string.
+// However, the return statement still returns 'str' instead of 'name', which is a mistake.