done error 3.js

Author: Grajales-K

Sprint-1/errors/3.js

@@ -1,9 +1,28 @@
-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
+
+
+// const cardNumber = 4533787178994213;
+// const last4Digits = cardNumber.(-4);
+
+// console.log(last4Digits);
+
+
+
+// String.prototype.slice()
+// The slice() method of String values extracts a section of this string and returns it as a new string, 
+// without modifying the original string. but in this example we have number we can extract this.
+// 1 slice work only with String
+// 2 we have to convert the variable to String
+// 3 Option we can just added a single quotation but this variable is saving number.
+
+
+const cardNumber = 4533787178994213;
+const last4Digits = cardNumber.toString().slice(-4);
+
+console.log(last4Digits);