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

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

What is the output of '5' - 3?

A). 2

B). 2

C). 53

D). Error

How do you declare a variable with an undefined value?

A). let x;

B). let x = '';

C). let x = 0;

D). let x = null;

Which of the following is a falsy value in JavaScript?

A). 0

B).

C). null

D). All of the above

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

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

A). String

B). Number

C). Object

D). Boolean

What is the result of typeof Symbol('id')?

A). symbol

B). object

C). string

D). undefined

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

A). ==

B). !=

C). ===

D). !==

What is the data type of true in JavaScript?

A). String

B). Boolean

C). Number

D). Object

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

A). array

B). object

C). number

D). list