JavaScript NaN() function

Tsarin da kai tsamman

isNaN() Fannin daya za'a iya nuna noman ko ta NaN (Not-a-Number).

Idan noman na zai kuma NaN, fannin daya ta jayi true. Kudu jayi false.

Fannin daya ta farko ne daga hanyar Number specific Number.isNaN() method.

Girmama NaN() ta tsararran noman ta zayi nuna, kai kai taimaka a zayi nuna.

Number.isNaN() kai tsararran noman, kuma kai tsararran gaba daya a kai tsararran jiniwa, kai kai jayi true.

Duba

Checki noman ko ta NaN:

isNaN(123) //false
isNaN(-1.23) //false
isNaN(5-2) //false
isNaN(0) //false
isNaN('123') //false
isNaN('Hello') //true
isNaN('2005/12/12') //true
isNaN('') //false
isNaN(true) //false
isNaN(undefined) //true
isNaN('NaN') //true
isNaN(NaN) //true
isNaN(0 / 0) //true
isNaN(null) //false

Sai shi

Lunan

isNaN(value)

Kuduwa

Marami Bayani
value Wajib. Noman a yauke da nuna.

Tasharanci

Mutumman: Bulwa. Idanin bii NaN, a jayi true, kudu jayi false.
JavaScript ɗanin yin ɗanin: ECMAScript 1

ɗanin kwararru

ɗanin Chrome Edge Firefox Safari Opera
isNaN() Yin nasara Yin nasara Yin nasara Yin nasara Yin nasara