Free Printable Javascript Function Quiz

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Javascript Function Quiz

Total questions: 11

Worksheet time: 6mins

Name

Class

Date

What is abstraction in the context of JavaScript functions?

It is a process of hiding the implementation details and showing only the functionality

It is a process of creating new data types

It is a process of converting one data type to another

It is a process of creating multiple copies of a function

When you invoke a function, which of the following is true about generalization?

Generalization is the process of invoking a function

Generalization is the process of making something more general

Generalization is the process of defining a function

The function can accept multiple arguments and provide more generalized functionality.s

What does a JavaScript function typically return if there is no explicit return statement?

undefined

null

The value of the last executed statement inside the function.

An error.

What is hoisting with respect to JavaScript functions?

Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their containing scope before code execution.

Hoisting is a JavaScript mechanism for changing the scope of a variable.

Hoisting is a JavaScript mechanism for declaring variables only.

Hoisting is a JavaScript mechanism for executing functions before they are declared.

Which of the following is an example of a function expression?

function myFunction() {}

myFunction() {}

const myFunction = function() {}

myFunction: function() {}

What is an anonymous function in JavaScript?

A function with no name

A function that is not declared

A function that returns null

A function that cannot be called

What does an Immediately Invoked Function Expression (IIFE) do?

It allows to run a function as soon as it is defined

It allows to delay the execution of a function

It allows to repeat the execution of a function

It allows to stop the execution of a function

In JavaScript, what is the scope of a variable declared inside a function (function-level scope)?

Global scope

Block scope

Function-level scope

None of the above

What is the scope chain in JavaScript?

The scope chain in JavaScript is a hierarchy of variable scopes, where each scope is a object that provides a set of variables.

A chain of methods in JavaScript.

A chain of classes in JavaScript.

A chain of functions in JavaScript.

10.

What is a closure in JavaScript?

A closure is a function that has access to its own scope, the outer function’s scope, and the global scope.

A closure is a special kind of object that combines two functions.

A closure is a type of variable in JavaScript.

A closure is a JavaScript keyword used to close a function.

11.

Which of the following is a correct syntax for an arrow function in JavaScript?

function() => {}

() -> {}

function => {}

const myFunction = () => {}

100 %

Javascript Function Quiz

Total questions: 11

Worksheet time: 6mins

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