Book Image

Javascript Unlocked

Book Image

Javascript Unlocked

Overview of this book

JavaScript stands bestride the world like a colossus. Having conquered web development, it now advances into new areas such as server scripting, desktop and mobile development, game scripting, and more. One of the most essential languages for any modern developer, the fully-engaged JavaScript programmer need to know the tricks, non-documented features, quirks, and best practices of this powerful, adaptive language. This all-practical guide is stuffed with code recipes and keys to help you unlock the full potential of JavaScript. Start by diving right into the core of JavaScript, with power user techniques for getting better maintainability and performance from the basic building blocks of your code. Get to grips with modular programming to bring real power to the browser, master client-side JavaScript scripting without jQuery or other frameworks, and discover the full potential of asynchronous coding. Do great things with HTML5 APIs, including building your first web component, tackle the essential requirements of writing large-scale applications, and optimize JavaScript’s performance behind the browser. Wrap up with in-depth advice and best practice for debugging and keeping your JavaScript maintainable for scaling, long-term projects. With every task demonstrated in both classic ES5 JavaScript and next generation ES6-7 versions of the language, Whether read cover-to-cover or dipped into for specific keys and recipes, JavaScript Unlocked is your essential guide for pushing JavaScript to its limits.
Table of Contents (10 chapters)
9
Index

Chapter 6. A Large-Scale JavaScript Application Architecture

Any experienced programmer works hard to make the code reusable and maintainable. Here we are guided by the principles of object-oriented programming, such as encapsulation, abstraction, inheritance, composition, and polymorphism. In addition to these fundamentals, we follow the five basic principles of object-oriented programming and design defined by Robert C. Martin and known under the acronym SOLID (https://en.wikipedia.org/wiki/SOLID_(object-oriented_design)). When during code review we run into a violation of any of these principles, it's considered as a code smell and results in refactoring. At the core of the tasks that we solve every day in development, often lie the common problems that we meet again and again. In this chapter, we will cover the most common universal architectural solutions and concepts in JavaScript development:

  • Design patterns in JavaScript
  • Understanding concern separation in JavaScript...