Q
What does the parseInt function do in JavaScript?

Answer & Solution

Answer: Option B
Solution:
The parseInt function parses a string and returns an integer.
Related Questions on Average

What is the type of the value returned by parseFloat('3.14abc')?

A). number

B). string

C). NaN

D). undefined

Given let a = '10'; let b = 20;, what is the result of a + b?

A). 30

B). 1020

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D). NaN

What is the result of the following code: let x = 5; x = 'hello'; console.log(typeof x);?

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B). string

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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

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What will typeof null return in JavaScript?

A). null

B). undefined

C). object

D). number

What is the result of typeof [] in JavaScript?

A). array

B). object

C). list

D). undefined

Which of the following values is considered falsy in JavaScript?

A). 1

B). 0

C). 0

D). {}

Given the code: let y = 10; y = true;, what is the type of y after execution?

A). number

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C). string

D). object

Which operator is used to determine the type of a variable in JavaScript?

A). typeof

B). instanceof

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What will typeof NaN return in JavaScript?

A). number

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