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 will be the value of c after `let c = 5; c
A). = 3;`?
B). 1
C). 3
D). 7
Which of the following operators is used to perform a logical AND assignment?
A). &&
B). &&=
C). &=
D). and=
What will be the value of b after let b = null; b ??= 'default';?
A). null
B). 'default'
C). undefined
D). NaN
What does let e = 6; e <<= 1; evaluate to?
A). 3
B). 12
C). 6
D). 7
What will be the value of a after let a = 5; a /= 2;?
A). 2
B). 5
C). 10
D). 0
What is the result of `let x = 10; x
A).
B). = 5;`?
C). 10
D). 5
What does let a = 10; a >>= 2; evaluate to?
A). 2
B). 4
C). 10
D). 5
Which operator would you use to shift bits to the right and assign the result?
A). >>>=
B). >>=
C). <<=
D). &=
Which assignment operator is used to perform multiplication and assignment in one step?
A). =*
B). *=
C). **=
D). //=
What will be the value of d after let d = true; d &&= false;?
A). 1
B). 0
C). NaN
D). undefined