What is the result of typeof undefined?

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object

Which of the following is a falsy value in JavaScript?

A). 0

B).

C). null

D). All of the above

How do you declare a variable with an undefined value?

A). let x;

B). let x = '';

C). let x = 0;

D). let x = null;

What is the result of null == undefined?

A). 1

B). 0

C). Error

D). NaN

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

Which function can convert a number to a string in JavaScript?

A). toString()

B). parseInt()

C). String()

D). Number()

What is the output of '5' + 3?

A). 8

B). 53

C). 8

D). Error

What will typeof [1, 2, 3] return?

A). array

B). object

C). number

D). list

What is the output of typeof null?

A). null

B). undefined

C). object

D). number

Which operator checks both value and type for equality in JavaScript?

A). ==

B). !=

C). ===

D). !==