What is the output of '5' - 3?
A). 2
B). 2
C). 53
D). Error
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
Which function can convert a number to a string in JavaScript?
A). toString()
B). parseInt()
C). String()
D). Number()
Which of the following is not a primitive data type in JavaScript?
A). String
B). Number
C). Object
D). Boolean
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 null == undefined?
A). 1
B). 0
C). Error
D). NaN
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 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