Javascript Reference - JavaScript NaN Property
The NaN property represents "Not-a-Number" value.
This property indicates that a value is not a legal number.
The NaN property is the same as the Number.Nan property.
Syntax
Number.NaN
Browser Support
 |
 |
 |
 |
 |
|
|---|---|---|---|---|---|
NaN |
Yes | Yes | Yes | Yes | Yes |
Return Value
NaN