12 tips for writing clean and scalable JavaScript

JavaScript, originally a scripting language, has evolved into a comprehensive programming language crucial for modern web applications, especially single-page applications (SPAs) utilizing frameworks like React, AngularJS, and Vue.js. The article offers practical advice for JavaScript developers, particularly those with intermediate skills, to write clean and efficient code. These tips include isolating code into specific functions, favoring modularization, preferring multiple parameters over single object parameters, utilizing destructuring, setting default values, and practicing data scarcity. It emphasizes maintaining manageable file sizes, adopting consistent formatting with tools like Prettier, and employing meaningful variable names. The use of async/await for better readability, organizing module imports, and managing console logs with libraries like loglevel or winston are also recommended. The author, Lukas Gisder-Dubé, shares insights from his experience as a startup CTO and instructor, while promoting LogRocket as a tool for understanding JavaScript errors through comprehensive frontend monitoring.