Comments (1)
ta2edchimp
commented on August 17, 2024
Well, NaN is the value of a variable of type Number, that is "not a number".
It's not that it hasn't been noticed until now (see StackOverflow) — it's according to the specs (JS type Number is an IEEE 754 float.
Think, for example, of parseInt(input) as a function with a return value of type Number and with an input value that cannot be parsed as a numeric value.
The return value must be of type Number, but does not need to be of a numeric value, thus NaN.
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