Answer & Solution
Answer: Option B
Solution:
The parseInt function parses a string and returns an integer.
Q
What does the parseInt function do in JavaScript?
Related Questions on Average
What is the result of typeof [] in JavaScript?
A). array
B). object
C). list
D). undefined
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 will typeof null return in JavaScript?
A). null
B). undefined
C). object
D). number
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
What is the type of the value returned by JSON.parse('null')?
A). null
B). string
C). object
D). undefined
Given the code: let y = 10; y = true;, what is the type of y after execution?
A). number
B). boolean
C). string
D). object
What is the type of the value returned by parseFloat('3.14abc')?
A). number
B). string
C). NaN
D). undefined
How can you check if a variable is an array in JavaScript?
A). typeof variable === 'array'
B). Array.isArray(variable)
C). variable instanceof array
D). variable.constructor === array
Which of the following values is considered falsy in JavaScript?
A). 1
B). 0
C). 0
D). {}
Given let a = '10'; let b = 20;, what is the result of a + b?
A). 30
B). 1020
C). 30
D). NaN