What is the value of the expression '20' - 10 in JavaScript?
A). 10
B). '10'
C). '2010'
D). Error
What data type does the value true represent in JavaScript?
A). Number
B). String
C). Boolean
D). Object
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 5 + 5 + '10' in JavaScript?
A). 20
B). '510'
C). '15'
D). 15
What is the value of the expression 'Hello' + 'World' in JavaScript?
A). 'HelloWorld'
B). 'Hello World'
C). 'Hello+World'
D). Error
What is the value of the expression (10 > 5)
A).
B). (3 < 2) in JavaScript?
C). 1
D). 0
What does the expression (5 > 3) evaluate to in JavaScript?
A). 1
B). 0
C). undefined
D). null
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 (true
A).
B). false) && (true && false) 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]