--- title: Writing Clean and Maintainable JavaScript in 2025 description: Adopt modern JavaScript patterns that make your code easier to read, test, and maintain over time. image: https://thedeveloper.javierfuentes.cl/hubfs/Imported_Blog_Media/photo-1517694712202-14dd9538aa97-1.jpg --- [Skip to content](https://thedeveloper.javierfuentes.cl/blog/writing-clean-and-maintainable-javascript-in-2025#main-content) [![Javier Fuentes - The Developer](https://thedeveloper.javierfuentes.cl/hubfs/jf-dev/img/logos/jf-logo.svg "Javier Fuentes - The Developer")](https://thedeveloper.javierfuentes.cl/) - [Home](https://thedeveloper.javierfuentes.cl/qa-test) - Products Show submenu for Products - [Product 1](https://thedeveloper.javierfuentes.cl/qa-test) Show submenu for Product 1 - [Sub Product 1](https://thedeveloper.javierfuentes.cl/qa-test) - Product 2 Show submenu for Product 2 - [Sub Product 2](https://thedeveloper.javierfuentes.cl/qa-test) - [Sub Product 3](https://thedeveloper.javierfuentes.cl/qa-test) - [Pricing](https://thedeveloper.javierfuentes.cl/qa-test) - Blog - [Company](https://thedeveloper.javierfuentes.cl/qa-test) Show submenu for Company - [History](https://thedeveloper.javierfuentes.cl/qa-test) - [Open Positions](https://thedeveloper.javierfuentes.cl/qa-test) - [Home](https://thedeveloper.javierfuentes.cl/qa-test) - Products Show submenu for Products - [Product 1](https://thedeveloper.javierfuentes.cl/qa-test) Show submenu for Product 1 - [Sub Product 1](https://thedeveloper.javierfuentes.cl/qa-test) - Product 2 Show submenu for Product 2 - [Sub Product 2](https://thedeveloper.javierfuentes.cl/qa-test) - [Sub Product 3](https://thedeveloper.javierfuentes.cl/qa-test) - [Pricing](https://thedeveloper.javierfuentes.cl/qa-test) - Blog - [Company](https://thedeveloper.javierfuentes.cl/qa-test) Show submenu for Company - [History](https://thedeveloper.javierfuentes.cl/qa-test) - [Open Positions](https://thedeveloper.javierfuentes.cl/qa-test) Search - There are no suggestions because the search field is empty. # Writing Clean and Maintainable JavaScript in 2025 [James Rivera](https://thedeveloper.javierfuentes.cl/blog/author/james-rivera) Jul 20, 2025, 12:00:00 AM 1 Clean JavaScript is not about using the latest syntax — it is about clarity of intent. This post covers naming conventions, function size, avoiding side effects, modular architecture, and the mindset shift from writing code for computers to writing code for humans. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer aliquam sed nunc ut aliquam. Maecenas aliquam libero et quam tincidunt fringilla. Vestibulum sit amet quam semper, gravida elit ut, suscipit mauris. Etiam vestibulum, enim eget ultrices interdum, metus felis suscipit sapien, sed suscipit tellus risus a urna. Nulla facilisi. Sed non ipsum efficitur, ultricies turpis sed, efficitur purus. Curabitur id diam vitae ex finibus facilisis a sit amet metus. Phasellus vel arcu vel neque ultricies ultricies non quis risus. Sed non gravida orci, vitae interdum massa. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Etiam venenatis gravida egestas. Aliquam non libero non lectus tincidunt ultricies et quis risus.2 Clean JavaScript is not about using the latest syntax — it is about clarity of intent. This post covers naming conventions, function size, avoiding side effects, modular architecture, and the mindset shift from writing code for computers to writing code for humans. [Best-Practices](https://thedeveloper.javierfuentes.cl/blog/tag/best-practices), [Javascript](https://thedeveloper.javierfuentes.cl/blog/tag/javascript) ## Read On [![](https://thedeveloper.javierfuentes.cl/hs-fs/hubfs/Imported_Blog_Media/photo-1526374965328-7f61d4dc18c5-1.jpg?width=352&name=photo-1526374965328-7f61d4dc18c5-1.jpg)](https://thedeveloper.javierfuentes.cl/blog/accessible-data-tables-structure-headers-and-captions) ### [Accessible Data Tables: Structure, Headers, and Captions](https://thedeveloper.javierfuentes.cl/blog/accessible-data-tables-structure-headers-and-captions) Data tables are often poorly implemented, turning structured information into an unnavigable wall... [![](https://thedeveloper.javierfuentes.cl/hs-fs/hubfs/Imported_Blog_Media/photo-1526374965328-7f61d4dc18c5-1.jpg?width=352&name=photo-1526374965328-7f61d4dc18c5-1.jpg)](https://thedeveloper.javierfuentes.cl/blog/image-alt-text-a-practical-guide-for-developers) ### [Image Alt Text: A Practical Guide for Developers](https://thedeveloper.javierfuentes.cl/blog/image-alt-text-a-practical-guide-for-developers) Alt text is often misunderstood. It is not just a description of what is in the image — it is a... [![](https://thedeveloper.javierfuentes.cl/hs-fs/hubfs/Imported_Blog_Media/photo-1551288049-bebda4e38f71-1.jpg?width=352&name=photo-1551288049-bebda4e38f71-1.jpg)](https://thedeveloper.javierfuentes.cl/blog/how-to-conduct-an-accessibility-audit-on-any-website) ### [How to Conduct an Accessibility Audit on Any Website](https://thedeveloper.javierfuentes.cl/blog/how-to-conduct-an-accessibility-audit-on-any-website) Automated tools catch roughly 30% of accessibility issues. A thorough audit combines tools like Axe... 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