What is the output of '5' - 3?
A). 2
B). 2
C). 53
D). Error
What is the data type of an array in JavaScript?
A). Array
B). Object
C). Collection
D). List
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
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 [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the output of typeof function() {}?
A). function
B). object
C). undefined
D). number
What is the data type of true 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 will typeof NaN return?
A). number
B). NaN
C). undefined
D). object