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 5 + 5 + '10' in JavaScript?
A). 20
B). '510'
C). '15'
D). 15
What is the result of the expression 10 + '5' in JavaScript?
A). 105
B). '15'
C). 15
D). '105'
Which of the following represents an object in JavaScript?
A). [1, 2, 3]
B). 42
C). {name: 'Alice', age: 30}
D). 1
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 (true
A).
B). false) && (true && false) in JavaScript?
C). 1
D). 0
What is the value of the expression (10 > 5)
A).
B). (3 < 2) in JavaScript?
C). 1
D). 0
Which of the following represents a numeric value in JavaScript?
A). 'Hello'
B). 1
C). 42
D). [1, 2, 3]
What is the value of the expression true && false in JavaScript?
A). 1
B). 0
C). Error
D). null
Which of the following represents an array in JavaScript?
A). {name: 'John', age: 30}
B). 'Hello'
C). [1, 2, 3]
D). 1