Which symbol is used to denote a string template literal?

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

What is the data type of 42 in JavaScript?

A). String

B). Boolean

C). Number

D). Object

What is the result of typeof undefined?

A). undefined

B). null

C). object

D). number

What is the data type of an array in JavaScript?

A). Array

B). Object

C). Collection

D). List

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

A). ==

B). !=

C). ===

D). !==

What is the result of null == undefined?

A). 1

B). 0

C). Error

D). NaN

What is the output of '5' + 3?

A). 8

B). 53

C). 8

D). Error

What is the output of typeof null?

A). null

B). undefined

C). object

D). number

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

A). parseInt()

B). toString()

C). toNumber()

D). parseStr()