JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Exercise - Update New User Database with Splice

The video tutorial guides viewers through an exercise on updating usernames using the splice method. It begins with a context of working at a startup and emphasizes the importance of monitoring usernames. The exercise involves declaring a function to update usernames, logging and initializing usernames in the console, and replacing a username in an array. The tutorial concludes with encouragement and a promise of a solution in the next video.

What is the main focus of the exercise described in the video?

• Monitoring usernames in a startup

• Working for the CIA

• Developing a new app

• Creating a marketing strategy

What is the first step in the exercise after declaring the function?

• Return the array

• Log the usernames to the console

• Replace a username

• Take a break and play foosball

Which function is used to update the usernames in the exercise?

• filter

• map

• splice

• slice

What is the specific task to be performed in the updateUsernames function?

• Add a new user

• Remove all users

• Replace Susie with Bob

• Sort the usernames

What level of achievement is mentioned upon completing the exercise?

• Expert

• Beginner

• Apprentice

• Master