What is the value of the expression 'Hello' + 'World' in JavaScript?
A). 'HelloWorld'
B). 'Hello World'
C). 'Hello+World'
D). Error
Which of the following represents a Boolean value in JavaScript?
A). 'true'
B). '42'
C). 'null'
D). 'undefined'
Which of the following represents an undefined value in JavaScript?
A). 'undefined'
B). null
C). undefined
D). 'null'
What is the result of the expression '10' + 5 in JavaScript?
A). '105'
B). 15
C). '15'
D). Error
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
What is the result of the expression 5 * '3' in JavaScript?
A). 15
B). '15'
C). Error
D). 53
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 data type of the value 'Hello, World!' in JavaScript?
A). Number
B). String
C). Boolean
D). Array
Which of the following represents a string value in JavaScript?
A). {name: 'John', age: 30}
B). 42
C). 'Hello, World!'
D). 1