Brief Introduction
Every web developer needs to be able to work with asynchronous code. Network requests, browser events, web workers and just about every else about the web happens asynchronously. JavaScript developers normally rely on callbacks to execute async code, but Native JavaScript Promises offer a much easier solution. With Promises, error handling is streamlined and it becomes possible to flexibly chain lots of asynchronous work without creating a tangled mess of callbacks.Course Summary
Learn how to work with JavaScript Promises to write asynchronous code that is easier to read, write, and debug.Key Learning Points
- Understand the basics of Promises and how they differ from callbacks
- Learn how to create, chain, and handle errors with Promises
- Explore advanced topics such as multiple Promises, race conditions, and testing
- Apply Promises in real-world scenarios such as making API calls and handling user input
Related Topics for further study
Learning Outcomes
- Understand the basics of Promises and how they simplify asynchronous programming
- Create, chain, and handle errors with Promises
- Apply Promises in real-world scenarios such as making API calls and handling user input
Prerequisites or good to have knowledge before taking this course
- Knowledge of JavaScript fundamentals
- Familiarity with callbacks
Course Difficulty Level
IntermediateCourse Format
- Self-paced online course
- Video lectures
- Hands-on coding exercises
- Quizzes and assessments
Similar Courses
- ES6 JavaScript: The Complete Developer's Guide
- JavaScript: Understanding the Weird Parts
- Advanced JavaScript Concepts
Related Education Paths
Notable People in This Field
- JavaScript Expert
- JavaScript Author
Related Books
Description
Learn how to simplify asynchronous work with Native JavaScript Promises!Requirements
- We expect that students have built web apps in the past and they are familiar with the pitfalls of callback-heavy code. There is no HTML or CSS in this class. JavaScript Skills Required: Using functions to return objects and other functions Basic understanding of scope and closures Reading and writing named and anonymous callbacks Array methods like .forEach and .map Other Requirements: Ability to use GitHub to clone repos and checkout branches Comfort with command line tools See the Technology Requirements for using Udacity.
Knowledge
- Instructor videosLearn by doing exercisesTaught by industry professionals
Outline
- lesson 1 Creating Promises Promises syntax and scope. Simplifying common useful methods with Promises. Basic error handling. lesson 2 Chaining Promises Creating sequences of async work manually. Advanced error handling. Techniques for generating sequences of async work with array methods.
Summary of User Reviews
The JavaScript Promises course on Udacity has received positive reviews from users. Many users found the course to be comprehensive and informative, with a focus on practical application rather than just theory.Key Aspect Users Liked About This Course
Practical application-focused learningPros from User Reviews
- Comprehensive and informative content
- Practical examples and exercises
- Engaging and knowledgeable instructors
Cons from User Reviews
- Some users found the course to be too basic
- Limited interaction with instructors
- No graded assignments or exams
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