The Modern JavaScript Bootcamp (2019) - A Fetch Challenge

The video tutorial guides viewers through converting the getCountry function to use the fetch API instead of XMLHttpRequest. It outlines three main steps: implementing fetch, ensuring the function resolves with the correct country object, and updating error handling using catch. The tutorial also covers simplifying code with arrow functions and testing the changes to ensure correct functionality. The video concludes with a successful demonstration of the updated code.

What is the primary goal of converting the getCountry function?

• To make the function compatible with older browsers

• To add more features to the function

• To improve the speed of the function

• To use the fetch API instead of XML HTTP requests

What is the first step in converting the getCountry function?

• Changing the error handling mechanism

• Removing the old function implementation

• Ensuring the function resolves with the correct country object

• Using fetch to return a promise

How should the getCountry function resolve after using fetch?

• With a string representing the country

• With a JSON object representing the country

• With an array of country names

• With a boolean indicating success

What is the purpose of using catch in the final step?

• To handle successful responses

• To handle errors in the fetch process

• To log the response data

• To improve the function's performance

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

• Throw a new error with a message

• Log the error and continue

• Return a default country object

• Retry the fetch request

What is the expected output when the country code 'US' is used?

• United Kingdom

• United States of America

• Mexico

• Canada

What is the significance of removing the old fetch call?

• It ensures compatibility with modern browsers

• It is no longer needed after integrating fetch into both functions

• It reduces the size of the codebase

• It improves the performance of the application