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Lisel Jensen
874 PointsIs this exercise wrong??
Undefined == NULL evaluates to TRUE undefined === NULL evaluates to FALSE and would not execute the "if" statement.
3 Answers
Kevin Murphy
24,380 PointsUndefined and Null are not specifically equivalent hence undefined === NULL evaluates to False. The number of equal signs chosen for the operator makes a big difference in this case. Jim explains this quirk of JS in the video so make sure you note that section. Circle back if still having trouble.
Dino Paškvan
Courses Plus Student 44,108 PointsThe exercise is not wrong. It's teaching you the difference between the equality operator (==) and the identity (===) operator.
The equality operator enables type coercion, converting values of different types into same type so that they can be compared.
The identity operator does not enable the type coercion, so it only returns true for same values which are also of same type.
Lisel Jensen
874 PointsOh, I see. I misread the question. Thanks