CRT-600 Exam Dumps | GIven a value, which three options can a developer use to detect if the value is NaN? Choose 3 answers

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Question 19/86

GIven a value, which three options can a developer use to detect if the value is NaN?
Choose 3 answers !

A. value ! == value

B. value === Number.NaN

C. Number.isNaN(value)

D. value == NaN

E. Object.is(value, NaN)

Correct Answer: C,D

Recent Comments (The most recent comments are at the top.)

AKASH SHARMA - Mar 01, 2024

A C and E
let value = NaN;

console.log(value === Number.NaN)
console.log(Number.isNaN(value))
console.log(value == NaN)
console.log(value !== value)
console.log(Object.is(value, NaN))

OUTPUT :
false
true
false
true
true

Alan - Mar 08, 2023

Anser is C and E. NaN can never be equal to NaN

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