The Modern JavaScript Bootcamp (2019) - The Fetch API

The Modern JavaScript Bootcamp (2019) - The Fetch API

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

Created by

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The video tutorial introduces the Fetch API as a modern alternative to XMLHttpRequest for making HTTP requests in JavaScript. It explains how Fetch API integrates promises, allowing for cleaner and more efficient code through promise chaining. The tutorial covers handling responses and errors, converting existing XMLHttpRequest code to use Fetch, and advanced promise chaining techniques. The video concludes with a challenge for viewers to apply these concepts independently.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary advantage of using the Fetch API over XML HTTP requests?

It is faster.

It is easier to read.

It is more secure.

It has built-in promise support.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When using the Fetch API, what does the 'then' method allow you to do?

Retry the request.

Cancel the request.

Handle the response data.

Log the request details.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the 'catch' method in a promise chain?

To modify the request headers.

To log the request details.

To handle errors that occur during the request.

To handle successful responses.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you check if a Fetch API request was successful?

By checking the response time.

By checking the response status code.

By checking the response headers.

By checking the response size.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the 'JSON' method of a Fetch API response return?

A string.

A promise that resolves to a JavaScript object.

A number.

An array.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of Fetch API, what does returning a promise from a 'then' method allow?

It allows chaining another 'then' method.

It cancels the request.

It modifies the request headers.

It logs the request details.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the benefit of abstracting promise chains into functions?

It allows for more complex error handling.

It increases the security of the code.

It reduces code duplication and improves readability.

It makes the code run faster.

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