Which of the following represents an undefined value in JavaScript?
A). 'undefined'
B). null
C). undefined
D). 'null'
What data type does the value true represent in JavaScript?
A). Number
B). String
C). Boolean
D). Object
What is the value of the expression true && false in JavaScript?
A). 1
B). 0
C). Error
D). null
Which of the following represents a Boolean value in JavaScript?
A). 'true'
B). '42'
C). 'null'
D). 'undefined'
Which of the following represents an array in JavaScript?
A). {name: 'John', age: 30}
B). 'Hello'
C). [1, 2, 3]
D). 1
What is the value of the expression (true
A).
B). false) && (true && false) in JavaScript?
C). 1
D). 0
Which of the following represents a null value in JavaScript?
A). undefined
B). 'null'
C). null
D). 0
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 !(5 > 3) in JavaScript?
A). 1
B). 0
C). Error
D). null
Which of the following represents a string value in JavaScript?
A). {name: 'John', age: 30}
B). 42
C). 'Hello, World!'
D). 1