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
What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
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;
Which symbol is used to denote a string template literal?
A). ''
B).
C). ``
D). {}
What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
What is the result of null === undefined?
A). 1
B). 0
C). Error
D). NaN