Callback Chaining

Callback Chaining

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video tutorial covers the callback chaining pattern in Node.js, focusing on asynchronous operations. It explains how to chain callbacks to perform tasks in a specific order, such as geocoding an address and using the coordinates for a weather forecast. The tutorial also addresses error handling in callbacks and demonstrates how to use command line arguments to make the application more dynamic. Finally, it includes testing and finalizing the application to ensure it functions correctly.

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10 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the problem with having two asynchronous IO operations that operate independently.

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the callback chaining pattern in asynchronous programming?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How does the event loop ensure that callbacks are executed in the correct order?

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

What changes need to be made to use the latitude and longitude properties in the forecast function?

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe how to handle errors that may occur during the geocode operation.

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6.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of using unique names for variables in nested callbacks?

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7.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the expected output when a valid location is provided to the application?

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