Answer & Solution
Answer: Option C
Solution:
The value 42 is a numeric value, so its data type is Number.
Q
What is the data type of 42 in JavaScript?
Related Questions on Average
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()
What is the output of '5' + 3?
A). 8
B). 53
C). 8
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;
What is the result of null == undefined?
A). 1
B). 0
C). Error
D). NaN
Which of the following is a falsy value in JavaScript?
A). 0
B).
C). null
D). All of the above
Which operator checks both value and type for equality in JavaScript?
A). ==
B). !=
C). ===
D). !==
Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
D). Boolean
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