Answer & Solution
Answer: Option B
Solution:
The -= operator decrements a by the specified value (1 in this case).
Q
How do you write an assignment statement to decrement a by 1 in JavaScript?
Related Questions on Average
What will be the value of x after let x = 5; x -= 2;?
A). 7
B). 2
C). 3
D). 5
What is the value of let a = 5; a *= 2 + 3;?
A). 25
B). 10
C). 15
D). 5
What does let a = 2; a **= 3; evaluate to?
A). 8
B). 6
C). 5
D). 2
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
Which operator would you use to shift bits to the right and assign the result?
A). >>>=
B). >>=
C). <<=
D). &=
What does the += operator do?
A). Adds and assigns
B). Subtracts and assigns
C). Multiplies and assigns
D). Divides and assigns
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
How does the &= operator work in JavaScript?
A). Performs a logical AND
B). Performs a bitwise AND
C). Performs a bitwise OR
D). Performs a logical OR