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 object in JavaScript?
A). [1, 2, 3]
B). 42
C). {name: 'Alice', age: 30}
D). 1
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 5 + 5 + '10' in JavaScript?
A). 20
B). '510'
C). '15'
D). 15
What is the value of the expression (true
A).
B). false) && (true && false) in JavaScript?
C). 1
D). 0
What is the result of the expression '10' + 5 in JavaScript?
A). '105'
B). 15
C). '15'
D). Error
What is the result of the expression 5 * '3' in JavaScript?
A). 15
B). '15'
C). Error
D). 53
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 !(5 > 3) in JavaScript?
A). 1
B). 0
C). Error
D). null