complete 3.js ex.

Author: fatimarouchi

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

@@ -1,9 +1,18 @@
-const cardNumber = 4533787178994213;
-const last4Digits = cardNumber.slice(-4);
+/*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
+
+//This won’t work because cardNumber is a number, and numbers don’t have the slice method.
+//console.log(`${last4Digits}`);
+// when I run it I see: TypeError: cardNumber.slice is not a function because slice() only works on strings or arrays.
+// To fix it, I need to turn the number into a string first, then slice the last 4 characters.
+const cardNumber = 453787178094213;
+const last4Digits = String(cardNumber).slice(-4);
+
+console.log(last4Digits);