3.js

const cardNumber = 4533787178998761;
const last4Digits = String(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

// Slice() works on String(characters) not number
//Numbers Don't have Indexes and strings do
// So converting to String allowed me to cut the last 4 Digit of the card number.