Answer & Solution
Answer: Option A
Solution:
The += operator increments a by the specified value (3 in this case).
Q
How do you write an assignment statement to increment a by 3 in JavaScript?
Related Questions on Average
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
What will be the value of c after `let c = 5; c
A). = 3;`?
B). 1
C). 3
D). 7
What does the ??= operator do?
A). Logical AND assignment
B). Logical OR assignment
C). Nullish coalescing assignment
D). Bitwise AND assignment
What is the result of `let x = 10; x
A).
B). = 5;`?
C). 10
D). 5
What does let e = 6; e <<= 1; evaluate to?
A). 3
B). 12
C). 6
D). 7
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 is the value of let a = 5; a *= 2 + 3;?
A). 25
B). 10
C). 15
D). 5
What will be the value of d after let d = true; d &&= false;?
A). 1
B). 0
C). NaN
D). undefined
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