JavaScript

JavaScript is the programming language of the web browser. It powers interactive features such as menus, sliders, form validation, filters and live updates, and with Node.js and React it is also used to build complete applications and servers.

How we use JavaScript

• Adding fast, accessible interactivity to websites without heavy libraries.
• Building dynamic front ends with React and Next.js.
• Validating forms and sending data to APIs without page reloads.
• Optimising scripts so they load late and don’t slow down the first paint.

When JavaScript is the right choice

Some JavaScript is part of almost every modern website; the skill is using only what is needed. We keep scripts small and deferred on marketing websites, and use TypeScript and frameworks for larger, interactive applications.

Related: Website design & development, TypeScript, React. Talk to our team about your project.

Frequently asked questions

Does JavaScript slow down websites?

Too much of it can. We load scripts only where needed, defer them so they don’t block the page, and avoid large libraries for small features.

Do I need jQuery?

Rarely today. Modern browsers support the features jQuery was used for, so we write plain JavaScript and keep pages lighter.

Will the website work if JavaScript fails to load?

Core content and links still work, because we build pages that do not depend on scripts for their basic function, and add interactivity on top.