completed task in 1-key-errors/0.js

Author: i786m

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

@@ -1,13 +1,29 @@
 // Predict and explain first...
 //  =============> write your prediction here
+// code will throw error as the parameter is being redeclared 
+// in the function.
 
 // 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
+
+//   let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+//       ^
+
+// SyntaxError: Identifier 'str' has already been declared indicates
+// str is being redeclared in the function as it was already declared
+// as a parameter of the function capitalise.
+
 // =============> write your new code here
+function capitalise(str) {
+  let capitalisedStr = `${str[0].toUpperCase()}${str.slice(1)}`;
+  return capitalisedStr;
+}
+
+capitalise("hello") // 'Hello'