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 '20' - 10 in JavaScript?
A). 10
B). '10'
C). '2010'
D). Error
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 5 + 5 + '10' in JavaScript?
A). 20
B). '510'
C). '15'
D). 15
Which of the following represents an array in JavaScript?
A). {name: 'John', age: 30}
B). 'Hello'
C). [1, 2, 3]
D). 1
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 numeric value in JavaScript?
A). 'Hello'
B). 1
C). 42
D). [1, 2, 3]
Which of the following represents an undefined value in JavaScript?
A). 'undefined'
B). null
C). undefined
D). 'null'
What is the value of the expression (10 > 5)
A).
B). (3 < 2) in JavaScript?
C). 1
D). 0