JavaScript Masterclass - Zero to Job-Ready with Hands-On Projects - Functions - II / 030

This video tutorial introduces JavaScript functions, covering how to write them, different types, and key concepts like hoisting. It starts with basic function syntax and declaration, then explores types such as regular, arrow, and variable functions. The tutorial concludes with an explanation of hoisting, demonstrating how functions can be called before they are declared.

What is the primary keyword used to define a function in JavaScript?

• define

• function

• create

• method

What is the term used when a function is defined but not yet executed?

• Declaration

• Invocation

• Initialization

• Execution

Which of the following is NOT a type of function discussed in the video?

• Arrow function

• Regular function

• Callback function

• Loop function

What is a key characteristic of an arrow function?

• It uses the 'function' keyword

• It is stored in a variable

• It uses a '=>' syntax

• It is a method

How can a function be stored in JavaScript?

• As a string

• As a number

• In an array

• In a variable

What is the term for using a function before it is declared?

• Floating

• Lifting

• Hoisting

• Raising

Which type of function is hoisted in JavaScript?

• Callback function

• Regular function

• Arrow function

• Variable function

What happens if you try to use a variable before it is declared?

• It logs 'undefined'

• It throws a reference error

• It throws a syntax error

• It works fine

Which of the following is a behavior of JavaScript that allows functions to be called before they are declared?

• Closure

• Hoisting

• Scoping

• Binding

What is the purpose of hoisting in JavaScript?

• To optimize code

• To allow functions to be called before declaration

• To manage memory

• To improve readability