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

What is the data type of 42 in JavaScript?

A). String

B). Boolean

C). Number

D). Object

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

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

A). String

B). Number

C). Object

D). Boolean

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

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;

Which symbol is used to denote a string template literal?

A). ''

B).

C). ``

D). {}

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

A). symbol

B). object

C). string

D). undefined