Which of the following represents a null value in JavaScript?
A). undefined
B). 'null'
C). null
D). 0
Which of the following represents an object in JavaScript?
A). [1, 2, 3]
B). 42
C). {name: 'Alice', age: 30}
D). 1
Which of the following represents a Boolean value in JavaScript?
A). 'true'
B). '42'
C). 'null'
D). 'undefined'
What is the value of the expression 5 + 5 + '10' in JavaScript?
A). 20
B). '510'
C). '15'
D). 15
What is the value of the expression (10 > 5)
A).
B). (3 < 2) in JavaScript?
C). 1
D). 0
What is the value of the expression (true
A).
B). false) && (true && false) in JavaScript?
C). 1
D). 0
What is the value of the expression !(5 > 3) in JavaScript?
A). 1
B). 0
C). Error
D). null
What is the value of the expression '20' - 10 in JavaScript?
A). 10
B). '10'
C). '2010'
D). Error
What is the data type of the value 'Hello, World!' in JavaScript?
A). Number
B). String
C). Boolean
D). Array
Which of the following represents an array in JavaScript?
A). {name: 'John', age: 30}
B). 'Hello'
C). [1, 2, 3]
D). 1