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JavaScript · Q54

Classes And Modules

Programming · JavaScript · question 54

Q54

Consider the following code snippet let x=x+1; console.log(x); What will be the result for the above code snippet?

A.
0
B.
Null
C.
ReferenceError
D.
NaN
Answer

Answer: Option D

Solution

Answer: Option D
Solution:
Since x is a let variable and since x is undefined, so x+1 is NaN. Thus, the above code snippet prints NaN.