Q
Which data type represents a block of reusable code in JavaScript?

Answer & Solution

Answer: Option C
Solution:
Functions in JavaScript represent a block of reusable code.
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What is the outcome of typeof undefined in JavaScript?

A). String

B). Undefined

C). Null

D). Number

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A). '5'

B). 5

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D). 10

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A). Object

B). Array

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A). Array

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A). Not a Number

B). Infinity

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What is the data type of the value true in JavaScript?

A). Number

B). String

C). Boolean

D). Undefined

What is the data type of the value undefined in JavaScript?

A). Number

B). Boolean

C). String

D). Undefined

What is the result of 0 / 0 in JavaScript?

A). Infinity

B). 0

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Which operator checks if an object is an instance of a specific object type in JavaScript?

A). instanceof

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