Name
NaN — NN 3 IE J2 ECMA 1
Synopsis
Read-only
Equal to a value that is not-a-number. JavaScript returns this value
when a numerical operation yields a non-numerical result because of a
flaw in one of the operands. If you want to test whether a value is
not a number, use the isNaN() global function
rather than comparing to this property value.
Value
NaN
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