�[200~Variable declared twice fixed

Author: M-Abdoon

.gitignore

@@ -1,4 +1,5 @@
 node_modules
 .DS_Store
 .vscode
+testing.js --- IGNORE ---
 **/.DS_Store

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

@@ -1,13 +1,24 @@
 // 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) {
-  let str = `${str[0].toUpperCase()}${str.slice(1)}`;
+  str = `${str[0].toUpperCase()}${str.slice(1)}`;
   return str;
 }
 
-// =============> write your explanation here
-// =============> write your new code here
+console.log(capitalise("hello"));

testing.js

@@ -0,0 +1,6 @@
+function capitaliseFirstLetter(string){
+  string = `${string[0].toUpperCase()}`;
+  return string;
+}
+
+console.log(capitaliseFirstLetter("hello"));