JavaScript Number.NaN Property
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JavaScript Number.NaN Property
The Number.NaN
property represents Not-A-Number. Equivalent of NaN
.
Note: NaN
a static property of the JavaScript Number object, i.e., you can only use it as Number.NaN
, not as x.NaN
, where x is a number.
Example
HTML Online Editor
<!DOCTYPE html>
<html>
<body>
<script>
var num = 25;
if(num === Number.NaN)
document.write("variable 'num' is NaN")
else
document.write("variable 'num' is not a NaN")
</script>
</body>
</html>
Syntax
Number.NaN
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