Javascript Promises

JavaScript Promises

Intermediate

40 Lessons

12h

Certificate of Completion

JavaScript promises helps us to handle asynchronous operations more efficiently by assigning the handler with the success value or failure reason.

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Explanations

Explanations

This course includes

69 Playgrounds

5 Quizzes

26 Illustrations

This course includes

69 Playgrounds

5 Quizzes

26 Illustrations

Course Overview

Promises are used to deal with event handling and callbacks in asynchronous programming in JavaScript, such as clicks and key presses. Promises allow developers to specify a function to execute at some later point in response to certain events. Promises may also indicate whether a certain code succeeded or failed in performing its assigned job. In this course, you will learn how to chain different promises, which makes the code easier to understand and debug. Next, you’ll learn built-in methods to monitor ...Show More

What You'll Learn

An in-depth understanding of JavaScript promises

An understanding of the asynchronous programming in JavaScript

Hands-on experience creating settled and unsettled promises

A working knowledge of chaining promises

Familiarity with monitoring and responding to promises executing in parallel

The ability to track unhandled rejections

Course Content

1

Introduction

What’s This Course About?

Introduction to JavaScript Promises

2

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

3

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

4

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

5

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

6

Tracking Down the Unhandled Rejections

5 Lessons

7

Conclusion

1 Lesson

COURSE AUTHOR

How You'll Learn

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