# Number.isNaN 与 globalThis.isNaN 有何区别
Issue
欢迎在 Gtihub Issue 中回答此问题: Issue 640 (opens new window)
Author
Number.isNaN(NaN);
isNaN(NaN);
Number.isNaN("NaN");
isNaN("NaN");
Author
Number.isNaN(NaN); isNaN(NaN); Number.isNaN("NaN"); isNaN("NaN");
试了下 Number.isNaN('NaN')
是 false
,其他都是 true