The Modern JavaScript Bootcamp (2019) - Async/Await Challenge

The video tutorial covers the process of converting regular JavaScript functions to async functions using the async/await syntax. It includes challenges that require converting 'getCountry' and 'getLocation' functions, ensuring no changes are needed in the main application code. The tutorial also guides on creating a new function 'getCurrentCountry' that combines async functions to simplify code. Testing and optimization techniques are discussed to ensure the new async functions work as expected.

What is the primary goal of the first challenge in the video?

• To write new functions from scratch

• To learn how to use promises

• To convert functions to async functions using await

• To debug existing code

What is the first step in converting the getCountry function?

• Remove all console logs

• Add async keyword before the function

• Use a try-catch block

• Add a return statement

What should be done if the response status is not 200 in getCountry?

• Retry the request

• Log a warning message

• Return null

• Throw a new error

What is the purpose of using await in the getLocation function?

• To improve code readability

• To handle errors more effectively

• To make the function synchronous

• To pause execution until the promise is resolved

What is the main task of the second challenge?

• To refactor existing code

• To create a new function using async/await

• To optimize the fetch calls

• To add error handling

What does the getCurrentCountry function return?

• A boolean indicating success

• An array of country codes

• A promise that resolves to the country object

• A string with the country name

How does the getCurrentCountry function obtain the country information?

• By using async/await to call getLocation and getCountry

• By using a synchronous API call

• By directly accessing a global variable

• By reading from a local file

What is a benefit of using async/await over promises?

• It simplifies the code structure

• It makes the code run faster

• It eliminates the need for error handling

• It allows for synchronous execution

What is a valid way to return a promise in an async function?

• Using a setTimeout function

• Directly returning the promise without await

• By throwing an error

• Using a callback function

What is the next step after implementing async functions in the video?

• Integrating with the Hangman game

• Debugging the code

• Deploying the application

• Writing unit tests