What is the output of typeof null?

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

What is the data type of 42 in JavaScript?

A). String

B). Boolean

C). Number

D). Object

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

What is the output of typeof function() {}?

A). function

B). object

C). undefined

D). number

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

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

A). toString()

B). parseInt()

C). String()

D). Number()

Which of the following is not a primitive data type in JavaScript?

A). String

B). Number

C). Object

D). Boolean

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 will typeof NaN return?

A). number

B). NaN

C). undefined

D). object