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概述

Number.NaN 表示“非数字”(Not-A-Number)。和 NaN 相同。

不必创建一个 Number 实例来访问该属性,使用 Number.NaN 来访问该静态属性。

Number.NaN 属性的属性特性:
writable false
enumerable false
configurable false

规范

Specification Status Comment
ECMAScript 1st Edition (ECMA-262) Standard Initial definition. Implemented in JavaScript 1.1.
ECMAScript 5.1 (ECMA-262)
Number.NaN
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
Number.NaN
Standard  
ECMAScript Latest Draft (ECMA-262)
Number.NaN
Draft  

浏览器兼容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

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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此页面的贡献者: AlexChao, teoli, zhangyaochun1987
最后编辑者: AlexChao,