Variable declared twice fixed

Author: M-Abdoon

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

@@ -1,5 +1,9 @@
 // Predict and explain first...
-//  =============> write your prediction here
+// The code has a function that is supposed to capitalise the string passed to it. (only the first letter)
+// the string will be stored in the variable str and the function will return its value.
+// it takes the first letter (str[0]) and uses toUpperCase() method to capitalise it.
+// the str.slice(1) method is used to show the letter.
+// 
 
 // call the function capitalise with a string input
 // interpret the error message and figure out why an error is occurring
@@ -10,4 +14,14 @@ function capitalise(str) {
 }
 
 // =============> write your explanation here
+// an error occured because the variable str was already declared as a parameter of the function so
+// there was no need to use let again.
+
+
 // =============> write your new code here
+function capitalise(str) {
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return str;
+}
+
+console.log(capitalise("hello"));