Answer & Solution
Answer: Option C
Solution:
The ??= operator assigns the right operand to the left operand only if the left operand is null or undefined.
Q
What does the ??= operator do?
Related Questions on Average
What does let a = 10; a >>= 2; evaluate to?
A). 2
B). 4
C). 10
D). 5
What will be the value of c after `let c = 5; c
A). = 3;`?
B). 1
C). 3
D). 7
What is the result of `let x = 10; x
A).
B). = 5;`?
C). 10
D). 5
Which assignment operator is used to perform multiplication and assignment in one step?
A). =*
B). *=
C). **=
D). //=
Which operator would you use to shift bits to the right and assign the result?
A). >>>=
B). >>=
C). <<=
D). &=
What is the value of let a = 5; a *= 2 + 3;?
A). 25
B). 10
C). 15
D). 5
What will be the value of b after let b = null; b ??= 'default';?
A). null
B). 'default'
C). undefined
D). NaN
How does the ^= operator work in JavaScript?
A). Performs a logical XOR
B). Performs a bitwise XOR
C). Performs a logical AND
D). Performs a bitwise AND
What does let e = 6; e <<= 1; evaluate to?
A). 3
B). 12
C). 6
D). 7
Which of the following operators is used to perform a logical AND assignment?
A). &&
B). &&=
C). &=
D). and=