Böcker av Nicholas C. Zakas

Since promises were added to JavaScript in 2015, they have become an integral part of the language. A good understanding of how promises work is more important than ever in becoming a proficient JavaScript developer. This book begins by explaining the basic concepts behind promises, including what they are, how to use them, and how to create your own. You'll then build upon these basic concepts to learn how to chain promises together and how to respond to multiple promises at once. Once you've learned these advanced concepts, you'll move on to learn how promises work with async functions and how to track unhandled promise rejections. All of the concepts discussed are grounded in real world examples so you learn not just how to use a particular technique, but also why and when to use it. It doesn't matter if you're writing JavaScript for web browsers, Node.js, or Deno, this book will teach you everything you need to know about promises.

You may have definite ideas about writing code when working alone, but team development requires that everyone use the same approach. With the JavaScript practices in this bookincluding code style, programming tips, and automationyou will learn how to write maintainable code that other team members can easily understand, adapt, and extend.Author Nicholas Zakas assembled this collection of best practices as a front-end tech leader at Yahoo!, after completing his own journey from solo hacker to team player. He also includes rules recommended by other industry authorities. Use these tips and techniques to help your team set aside individual preferences and function at a higher level.Establish specific code conventions for your teamUse tools such as JSLint and JSHint to keep your team on trackAdopt style guidelines, such as basic formatting, to help your team produce uniform codeApply several programming practices to solve problems and improve code qualityCreate an automated JavaScript build system using a variety of utilitiesIntegrate browser-based JavaScript testing with tools such as the YUI Test Selenium Driver