The Number.NaN property represents Not-A-Number. Equivalent of NaN.
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 |
| Specification | Status | Comment |
|---|---|---|
| ECMAScript 1st Edition (ECMA-262) | Standard | Initial definition. Implemented in JavaScript 1.1. |
| ECMAScript 5.1 (ECMA-262) The definition of 'Number.NaN' in that specification. | Standard | |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'Number.NaN' in that specification. | Standard | |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'Number.NaN' in that specification. | Draft |
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/NaN