Answer & Solution
Answer: Option A
Solution:
The += operator adds the right operand to the left operand and assigns the result to the left operand.
Q
What does the += operator do?
Related Questions on Average
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 is the result of let a = 5; a %= 2;?
A). 1
B). 2
C). 0
D). 5
How do you write an assignment statement to increment a by 3 in JavaScript?
A). a += 3;
B). a = 3;
C). a == 3;
D). a + 3;
How do you write an assignment statement to decrement a by 1 in JavaScript?
A). a =- 1;
B). a -= 1;
C). a == -1;
D). a = 1;
What does the ??= operator do?
A). Logical AND assignment
B). Logical OR assignment
C). Nullish coalescing assignment
D). Bitwise AND assignment
What will be the value of d after let d = true; d &&= false;?
A). 1
B). 0
C). NaN
D). undefined
Which assignment operator is used to perform multiplication and assignment in one step?
A). =*
B). *=
C). **=
D). //=
Which of the following operators is used to perform a logical AND assignment?
A). &&
B). &&=
C). &=
D). 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