What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
What is the result of typeof Symbol('id')?
A). symbol
B). object
C). string
D). undefined
What is the output of typeof function() {}?
A). function
B). object
C). undefined
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;
Which symbol is used to denote a string template literal?
A). ''
B).
C). ``
D). {}
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
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