Updated code and changed answer in line 14 and 15 to 3.js

Author: JorvanW

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

@@ -1,5 +1,5 @@
-const cardNumber = "4533787178994213";
-const last4Digits = cardNumber.slice(-4);
+const cardNumber = 4533787178994213;
+const last4Digits = String(cardNumber).slice(-4);
 
 // The last4Digits variable should store the last 4 digits of cardNumber
 // However, the code isn't working
@@ -11,4 +11,6 @@ const last4Digits = cardNumber.slice(-4);
 //Prediction: I believe the code won't work because the slice method is incorrect. The slice method is used for strings.
 //Error: TypeError: cardNumber.slice is not a function
 //Needed to add "" to make it a string.
+//if not possible, I can change make the last4Digits = String(cardNumber).slice(-4); 
+// to make last4Digits to convert cardNumber into a string