JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Final Exercise - Facebook Unfriend Functionality

This video tutorial guides viewers through a JavaScript exercise focused on creating a function to unfriend users on a simulated Facebook platform. It begins with an introduction to the exercise, followed by a demonstration of the unfriending process on Facebook. The tutorial then details the structure of a Facebook user object, explaining its components like name, age, and friends list. Viewers are instructed on writing a function to dynamically remove a friend from the list, with emphasis on handling errors if the friend does not exist. The video concludes with a review of the exercise, reinforcing the concepts of objects and arrays in JavaScript.

What is the primary focus of the exercise discussed in the video?

• Adding new friends on Facebook

• Updating profile information

• Creating a new Facebook account

• Unfriending someone on Facebook

Which attribute in the Facebook user object is crucial for the unfriending functionality?

• Profile picture

• Friends list

• Date joined

• Full name

What should the unfriend function return if the specified friend does not exist?

• A null value

• An error message

• The original friends list

• A success message

What are the two arguments that the unfriend function should take?

• A friend's name and a date

• A string and a boolean

• An object and a number

• An object and a friend's name

What is the expected output of the unfriend function?

• A confirmation message

• The updated friends list

• The user's profile picture

• A list of all Facebook users