Update 3.js

Author: joanne342

Sprint-1/2-mandatory-errors/3.js

@@ -1,5 +1,6 @@
-const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+const cardNumber = "4533787178994213";
+const last4Digits = cardNumber.slice(cardNumber.length-4,cardNumber.length);
+console.log(last4Digits)
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working