To detect if a value is NaN (Not-a-Number) in JavaScript, a developer can use the following three options:

B. value != value
This is a trick based on the fact that NaN is the only value in JavaScript that is not equal to itself. If value != value is true, then value is NaN.
C. Number.isNaN(value)
This method specifically checks if a value is NaN. Unlike the global isNaN() function, Number.isNaN() does not perform type coercion, making it more reliable.
D. Object.is(value, NaN)
Object.is() method determines whether two values are the same value. It is more precise than == or === for NaN because Object.is(NaN, NaN) returns true, which is not the case for ===.
Why Not the Other Options?
A. value == NaN

This will always return false because NaN is not equal to any value, including itself. Therefore, this is not a valid method to check for NaN.
E. value === Number.NaN

This will also always return false because NaN is not strictly equal to NaN. Thus, this is not a valid method either.
Summary
The correct answers are:

B. value != value
C. Number.isNaN(value)
D. Object.is(value, NaN)...

BCD correct