The Number.NaN
property represents Not-A-Number. Equivalent of NaN
.
The source for this interactive example is stored in a GitHub repository. If you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
You do not have to create a Number
object to access this static property (use Number.NaN
).
Property attributes of Number.NaN |
|
---|---|
Writable | no |
Enumerable | no |
Configurable | no |
Examples
Checking whether values are numeric
function sanitise(x) {
if (isNaN(x)) {
return Number.NaN;
}
return x;
}
Testing against NaN
See Testing against NaN on the NaN
page.
Specifications
Browser compatibility
BCD tables only load in the browser