What is the data type of an array in JavaScript?

Which method can be used to convert a string to a number in JavaScript?

A). parseInt()

B). toString()

C). toNumber()

D). parseStr()

What is the result of null == undefined?

A). 1

B). 0

C). Error

D). NaN

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object

What will typeof NaN return?

A). number

B). NaN

C). undefined

D). object

What is the result of null === undefined?

A). 1

B). 0

C). Error

D). NaN

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

A). toString()

B). parseInt()

C). String()

D). Number()

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

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

A). ==

B). !=

C). ===

D). !==

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 output of typeof function() {}?

A). function

B). object

C). undefined

D). number