How do you write an assignment statement to decrement a by 1 in JavaScript?

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 does the += operator do?

A). Adds and assigns

B). Subtracts and assigns

C). Multiplies and assigns

D). Divides and assigns

What is the result of let a = 5; a %= 2;?

A). 1

B). 2

C). 0

D). 5

What does let e = 6; e <<= 1; evaluate to?

A). 3

B). 12

C). 6

D). 7

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=

What will be the value of d after let d = true; d &&= false;?

A). 1

B). 0

C). NaN

D). undefined

What will be the value of b after let b = null; b ??= 'default';?

A). null

B). 'default'

C). undefined

D). NaN

What does the ??= operator do?

A). Logical AND assignment

B). Logical OR assignment

C). Nullish coalescing assignment

D). Bitwise AND assignment

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;