µJS: Lightweight AJAX Navigation Library for Instant Page Transitions
By
amaury_bouchard
Sketches a bagel but doesn't bake it through.
Summary
µJS is a lightweight JavaScript library that enables AJAX navigation for traditional websites without requiring a full framework. It intercepts link clicks and form submissions, fetches new pages in the background, and updates only the changed content, creating an instant navigation experience similar to single-page applications. The library is only 5KB gzipped, has zero dependencies, requires no build step or server-side changes, and works with any backend technology like PHP, Python, Ruby, or Go.
Key quotes
· 5 pulledµJS changes that: it intercepts link clicks and form submissions, fetches the new page in the background, and replaces only the content that changed.
The browser never fully reloads — navigation feels instant, like a single-page application.
There's no framework to learn, no build step, no server-side changes.
Add a single script tag to your existing site, call mu.init(), and every internal link becomes an AJAX navigation.
It works with any backend — PHP, Python, Ruby, Go, or anything that serves HTML.
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