typescript 如何检查值是否为 NaN?

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时间:2020-09-09 07:36:56  来源:igfitidea点击:

How to check if value is NaN?

typescript

提问by ajaysinghdav10d

In TypeScript, how can we check if some value is NaN?

在 TypeScript 中,我们如何检查某个值是否为NaN

The following does not work:

以下不起作用:

someObject.someValue == NaN
someObject.someValue === NaN

回答by zeh

Same as JavaScript, isNaN.

与 JavaScript 相同,isNaN.

if (isNaN(someObject.someValue)) ...

Or the more modern Number.isNaN

或者更现代的 Number.isNaN

if (Number.isNaN(someObject.someValue)) ...