Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
What is the data type of 42 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
What will typeof [1, 2, 3] return?
A). array
B). object
C). number
D). list
Which of the following is a falsy value in JavaScript?
A). 0
B).
C). null
D). All of the above
What is the output of '5' + 3?
A). 8
B). 53
C). 8
D). Error
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 is the result of typeof undefined?
A). undefined
B). null
C). object
D). number
What is the output of '5' - 3?
A). 2
B). 2
C). 53
D). Error