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lines changed Original file line number Diff line number Diff line change 11const cardNumber = 4533787178994213 ;
2- const last4Digits = cardNumber . slice ( - 4 ) ;
2+ const last4Digits = cardNumber . toString ( ) . slice ( - 4 ) ; // Updated this line to convert number to string first
3+ console . log ( last4Digits ) ; // THis is added to see the output of the expression. Should print 4213
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45// The last4Digits variable should store the last 4 digits of cardNumber
56// However, the code isn't working
6- // Before running the code, make and explain a prediction about why the code won't work
7- // Then run the code and see what error it gives.
7+ // Before running the code, make and explain a prediction about why the code won't work - I am not very familiar with the slice method on numbers.
8+ /* My prediction is that the slice method is not a function that can be used on numbers, it is a function for strings and arrays.
9+ So I think the error will be something like "slice is not a function" or "cannot read property slice of undefined".
10+ I think this is because numbers do not have properties or methods like strings and arrays do.
11+ To fix this, I will convert the number to a string first, then use the slice method to get the last 4 digits.
12+ I will then convert it back to a number if needed.
13+ Then run the code and see what error it gives.
14+ */
815// Consider: Why does it give this error? Is this what I predicted? If not, what's different?
916// Then try updating the expression last4Digits is assigned to, in order to get the correct value
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