What is the result of null == undefined?
A). 1
B). 0
C). Error
D). NaN
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 function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
What is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the data type of true in JavaScript?
A). String
B). Boolean
C). Number
D). Object
What is the output of typeof null?
A). null
B). undefined
C). object
D). number
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
What will typeof NaN return?
A). number
B). NaN
C). undefined
D). object
What is the output of '5' - 3?
A). 2
B). 2
C). 53
D). Error