Answer & Solution
Answer: Option B
Solution:
In JavaScript, a variable's data type is determined at runtime and can change during execution.
Q
What does it mean that JavaScript is dynamically typed?
Related Questions on Average
What will typeof null return in JavaScript?
A). null
B). undefined
C). object
D). number
Which operator is used to determine the type of a variable in JavaScript?
A). typeof
B). instanceof
C). type
D). isType
What will typeof NaN return in JavaScript?
A). number
B). NaN
C). undefined
D). object
What is the result of typeof [] in JavaScript?
A). array
B). object
C). list
D). undefined
What happens when you add a number and a string in JavaScript?
A). An error is thrown
B). The number is converted to a string
C). The string is converted to a number
D). Both are converted to boolean
Which type conversion happens automatically in the expression 3 + '5'?
A). Number to String
B). String to Number
C). Boolean to String
D). Number to Boolean
What is the type of the value returned by JSON.parse('null')?
A). null
B). string
C). object
D). undefined
What does the isNaN function do?
A). Checks if a value is not a number
B). Converts a value to a number
C). Checks if a value is a number
D). Converts a value to NaN
Which of the following values is considered falsy in JavaScript?
A). 1
B). 0
C). 0
D). {}
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined