Which operator is used for string concatenation in JavaScript?

What is the result of the expression 5 + '5'?

A). 10

B). 55

C). 55

D). NaN

What is the result of 10 % 3 in JavaScript?

A). 0

B). 1

C). 2

D). 3

What is the result of '5' - 2?

A). 3

B). 3

C). 03-May

D). NaN

What does the !! operator do to a value?

A). Negates the value

B). Converts the value to its boolean equivalent

C). Increments the value by 2

D). No effect

What is the value of the expression null == undefined?

A). 1

B). 0

C). null

D). undefined

What does the typeof operator return for a function?

A). function

B). object

C). undefined

D). method

What does the + operator do when used with two numbers?

A). Concatenates them as strings

B). Adds them

C). Multiplies them

D). Subtracts them

Which operator checks if two values are not equal and also checks for type?

A). !=

B). !==

C). <

D). >

Which operator would you use to determine the remainder of a division in JavaScript?

A). /

B). %

C). //

D). \

What is the result of 5 === '5'?

A). 1

B). 0

C). 1

D). 0