mandatory errors 3.js added " to cardNumber to make into string, added console.log to make last4Digits visible.

Author: HM-127BTY

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

@@ -1,9 +1,12 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";
 const last4Digits = cardNumber.slice(-4);
+console.log (last4Digits)
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
 // Before running the code, make and explain a prediction about why the code won't work
 // Then run the code and see what error it gives.
 // Consider: Why does it give this error? Is this what I predicted? If not, what's different?
 // Then try updating the expression last4Digits is assigned to, in order to get the correct value
+// I firsth thought the -4 would not work as it starts on 0
+// I then recalled the code wont work as the cardNumber is a number and not a string, it needs to be a string for the .slice to work.