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JavaScript NaN Property

Definition and Usage

The NaN property is a special value representing Not-a-Number. This property is used to indicate a value is not a number. A number object may be set to this value to indicate that it is not really a number.
Tip: Use the isNaN() global function to see if a value is an NaN value.

Syntax

Number.NaN


Example

<script type="text/javascript">
var Month=30;
if (Month < 1 || Month > 12)
{
Month = Number.NaN;
}
document.write(Month);
</script>

The output of the code above will be:

Nan
JavaScript NaN Property Reviewed by 1000sourcecodes on 23:02 Rating: 5
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