Function Scope Mockest | JavaScript

1.

What is function scope in JavaScript?

A). Variables defined within a function B). Variables defined outside a function C). Variables defined within an object D). Variables defined globally

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2.

Which keyword is used to declare a function-scoped variable?

A). var B). let C). const D). function

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3.

What happens to a function-scoped variable outside of its function?

A). It becomes a global variable B). It becomes a local variable C). It is accessible only within the function D). It throws an error

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4.

Which of the following is true about function scope in JavaScript?

A). Variables are accessible globally B). Variables are accessible only within their functions C). Variables are accessible within an object D). Variables are accessible everywhere in the code

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5.

What is the output of console.log(innerVar); outside of exampleFunction if var innerVar = 'Hello'; is defined inside exampleFunction?

A). Hello B). undefined C). Error D). null

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6.

How do you declare a function-scoped variable using ES6?

A). var B). let C). const D). function

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7.

What is lexical scoping in JavaScript?

A). Variables scoped to the entire codebase B). Variables scoped to their functions C). Variables scoped based on their position in the code D). Variables scoped based on their names

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8.

Which of the following demonstrates lexical scoping?

A). Closure B). Hoisting C). Global scope D). Local scope

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9.

What is the purpose of function scope in JavaScript?

A). To limit the visibility of variables B). To make variables global C). To create constants D). To execute functions

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10.

Can function-scoped variables be accessed from outside their functions?

A). Yes B). No C). Only if they are constants D). Only if they are defined globally

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Function Scope Mocktest

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