Number.NaN
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since julio de 2015.
La propiedad Number.NaN representa Not-A-Number (No es numero). Equivalente de NaN.
Pruébalo
function clean(x) {
// eslint-disable-next-line use-isnan
if (x === Number.NaN) {
// Can never be true
return null;
}
if (isNaN(x)) {
return 0;
}
}
console.log(clean(Number.NaN));
// Expected output: 0
No tienes que crear un objeto Number para acceder a esta propiedad estática (usa Number.NaN).
Atributos de la propiedad Number.NaN | |
|---|---|
| Sobrescribir | No |
| Numerable | No |
| Configurable | No |
Ejemplos
Chequea si los valores son numericos
js
function sanitise(x) {
if (isNaN(x)) {
return Number.NaN;
}
return x;
}
Testing against NaN
See Testing against NaN on the NaN page.
Especificaciones
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-number.nan |
Compatibilidad con navegadores
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