Building a JavaScript web app or API is the first step. Making it perform well is the next step. In this course, JavaScript Performance Playbook, you’ll learn to optimize and enhance the performance of your JavaScript app. First, you’ll explore JavaScript performance fundamentals. Next, you’ll discover modernizing legacy JavaScript code, tools to enhance performance, memory management, and DOM optimization. Finally, you’ll learn how to optimize JavaScript execution and move to asynchronous JavaScript code. When you’re finished with this course, you’ll have the skills and knowledge of making JavaScript perform well needed to run a performant JavaScript web app or API.