Step into the world of design patterns through modern JavaScript paradigms to supercharge your applications on the web and beyondKey FeaturesExplore various JavaScript design patterns, delving deep into their intricacies, benefits, and best practicesUnderstand the decision-making process guiding the selection of specific design patternsBuild a solid foundation to learn advanced topics in JavaScript and web performanceBook DescriptionUnlock the potential of JavaScript design patterns, the foundation for development teams seeking structured and reusable solutions to common software development challenges in this guide to improving code maintainability, scalability, and performance. Discover how these patterns equip businesses with cleaner and more maintainable code, promote team collaboration, reduce errors, and save time and costs.This book provides a comprehensive view of design patterns in modern (ES6+) JavaScript with real-world examples of their deployment in professional settings. You’ll start by learning how to use creational, structural, and behavioral design patterns in idiomatic JavaScript, and then shift focus to the architecture and UI patterns. Here, you’ll learn how to apply patterns for libraries such as React and extend them further to general web frontend and micro frontend approaches. The last section of the book introduces and illustrates sets of performance and security patterns, including messaging and events, asset and JavaScript loading strategies, and asynchronous programming performance patterns.Throughout the book, examples featuring React and Next.js, in addition to JavaScript and Web API examples, will help you choose and implement proven design patterns across diverse web ecosystems, transforming the way you approach development.What you will learnFind out how patterns are classified into creational, structural, and behavioralImplement the right set of patterns for different business scenariosExplore diverse frontend architectures and different rendering approachesIdentify and address common asynchronous programming performance pitfallsLeverage event-driven programming in the browser to deliver fast and secure applicationsBoost application performance using asset loading strategies and offloading JavaScript executionWho this book is forThis book is for developers and software architects who want to leverage JavaScript and the web platform for enhanced productivity, superior software quality, and optimized application performance.Prior experience with JavaScript and web development is assumed. Some of the more advanced topics in the book will be of interest to developers with intermediate experience in building for the web with JavaScript.About the AuthorHugo Di Francesco is a software engineer who has worked extensively with JavaScript. He holds a MEng degree in mathematical computation from University College London (UCL). He has used JavaScript across the stack to create scalable and performant platforms at companies such as Canon and Elsevier and in industries such as print on demand and mindfulness. He is currently tackling problems in the travel industry at Eurostar with Node.js, TypeScript, React, and Kubernetes while running the eponymous Code with website. Outside of work, he is an international fencer, in the pursuit of which he trains and competes across the globe. Table of ContentsWorking with Creational Design PatternsImplementing Structural Design PatternsLeveraging Behavioral Design PatternsExploring Reactive View Library PatternsRendering Strategies and Page HydrationMicro Frontends, Zones, and Islands ArchitecturesAsynchronous Programming Performance PatternsEvent-Driven Programming PatternsMaximizing Performance – Lazy Loading and Code SplittingAsset Loading Strategies and Executing Code off the Main Thread