Which operator is used for string concatenation in JavaScript?

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

A). 1

B). 0

C). null

D). undefined

What is the result of true + false?

A). 0

B). 1

C). truefalse

D). NaN

What does the typeof operator return for an array?

A). object

B). array

C). list

D). collection

Which of the following is not a comparison operator?

A). ==

B). >

C). <=

D). =

Which of the following operators can be used to compare two values, including type comparison?

A). ==

B). =

C). ===

D). !==

Which operator is used to assign a value to a variable in JavaScript?

A). =

B). ==

C). ===

D). =>

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

A). 1

B). 0

C). 1

D). 0

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

Which of the following is a logical operator in JavaScript?

A). &&

B). ||

C). !

D). All of the above