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All LessonsFree Lessons (4)

Introduction

What’s This Course About?Introduction to JavaScript Promises

Basics of Promises

Fundamentals of Promises Handlers Handlers Executed as Microtasks Unsettled Promises Settled Promises Non-Promise Thenables Summary: Basics of Promises Quiz: Basics of Promises

Chaining Promises

Fundamentals of Chaining Promises Promise Chains with the finally() Method Return Values in Promise Chains Return Promises in Promise Chains Return Promises from finally()Summary: Chaining Promises Quiz: Chaining Promises

Working with Multiple Promises

The Promise.all() Method When to Use the Promise.all() Method The Promise.allSettled() Method When to Use the Promise.allSettled() Method The Promise.any() Method When to Use the Promise.any() method The Promise.race() Method When to Use Promise.race()Summary: Working with Multiple Promises Quiz: Working with Multiple Promises

Async Functions and Await Expressions

Async Functions

What Makes Async Functions Different?

Await Expressions

Await Expressions and Promises

Await Expressions and Loops

Summary: Async Functions and Await Expressions

Quiz: Async Functions and Await Expressions

Tracking Down the Unhandled Rejections

How to Detect an Unhandled Rejection Web Browsers and Unhandled Rejections Detecting Unhandled Rejections with Node.js Summary: Tracking Down the Unhandled Rejections Quiz: Tracking Down the Unhandled Rejections

Conclusion

JavaScript Promises/

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Quiz: Async Functions and Await Expressions

Quiz: Async Functions and Await Expressions

Test your knowledge of async functions and await expressions.

We'll cover the following...

Technical Quiz

1.

(Select all that apply.) Which options are not asynchronous function features?

A.

The return value is not always a promise.

B.

Thrown errors are promise rejections.

C.

The for-await-of loop can be used.

D.

The await expression can’t be used.

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