solved error 4

Author: TaliaKucuk

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

@@ -1,9 +1,7 @@
-const cardNumber = 4533787178994213;
+const cardNumber = "4533787178994213";
 const last4Digits = cardNumber.slice(-4);
 
-// 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
+console.log(last4Digits);
+// I thought the issue might be something to do with the number given (-4) but it's actually the fact that cardNumber.slice is not a function.
+// Slice is not a function for numbers - it's for strings
+// To solve this we can turn the card number into a string