Change the expression last4Digits is assigned to

Author: ausiejute

Sprint-2/2-mandatory-errors/3.js

@@ -1,6 +1,6 @@
-const cardNumber = "4533787178994213";
-//const last4Digits = cardNumber.slice(-4);
-const last4Digits = cardNumber.slice(-4);
+const cardNumber = 4533787178994213;
+const last4Digits = cardNumber.toString().slice(-4);
+// alternatively, const last4Digits = (cardNumber + '').slice(-4);
 console.log(last4Digits);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
@@ -15,3 +15,6 @@ console.log(last4Digits);
 // Checked the error reference and decided to look more closely. Noticed that the card number is used as a number,
 // so it answers why the function couldn't be called - because they can be only called on Arrays and Strings.
 // Therefore, I'll add parentheses to turn the card number into a string (so that the function could be called)
+
+// Fix. 
+