Built bybigskysoftware/

htmx

</> htmx - high power tools for HTML

Stars

48.3k

Forks

1.6k

Watchers

48.3k

Open issues

661

JavaScriptNOASSERTION master Updated 3 days ago~21 stars/day lifetime

Open on GitHub Homepage

Editor's take

The anti-SPA. HTMX lets you build interactive UIs by adding HTML attributes — no React, no build step, no JS bundle. Server returns HTML fragments, client swaps them in. Massive trending growth in 2026 as the React-fatigue movement matures. ~40k stars. Best for content sites, internal tools, and anyone tired of npm dependency hell.

Use this if

You're building a server-rendered app and want interactivity without a JS framework.

Skip if

Your app is genuinely client-heavy (drag editor, real-time canvas) — React/Vue/Svelte still win there.

Frameworks

README — rendered from bigskysoftware/htmx

high power tools for HTML

introduction

htmx allows you to access AJAX, CSS Transitions, WebSockets and Server Sent Events directly in HTML, using attributes, so you can build modern user interfaces with the simplicity and power of hypertext

htmx is small (~14k min.gz'd), dependency-free & extendable

motivation

Why should only <a> and <form> be able to make HTTP requests?
Why should only click & submit events trigger them?
Why should only GET & POST be available?
Why should you only be able to replace the entire screen?

By removing these arbitrary constraints htmx completes HTML as a hypertext

quick start

  <script src="https://cdn.jsdelivr.net/npm/htmx.org@2.0.10/dist/htmx.min.js"    
          integrity="sha384-H5SrcfygHmAuTDZphMHqBJLc3FhssKjG7w/CeCpFReSfwBWDTKpkzPP8c+cLsK+V" 
          crossorigin="anonymous"></script>
  <!-- have a button POST a click via AJAX -->
  <button hx-post="/clicked" hx-swap="outerHTML">
    Click Me
  </button>

The hx-post and hx-swap attributes tell htmx:

"When a user clicks on this button, issue an AJAX request to /clicked, and replace the entire button with the response"

htmx is the successor to intercooler.js

installing as a node package

To install using npm:

npm install htmx.org --save

Note there is an old broken package called htmx. This is htmx.org.

website & docs

contributing

Want to contribute? Check out our contribution guidelines

No time? Then become a sponsor

hacking guide

To develop htmx locally, you will need to install the development dependencies.

Run:

npm install

Then, run a web server in the root.

This is easiest with:

npx serve

You can then run the test suite by navigating to:

http://0.0.0.0:3000/test/

At this point you can modify /src/htmx.js to add features, and then add tests in the appropriate area under /test.

/test/index.html - the root test page from which all other tests are included
/test/attributes - attribute specific tests
/test/core - core functionality tests
/test/core/regressions.js - regression tests
/test/ext - extension tests
/test/manual - manual tests that cannot be automated

htmx uses the mocha testing framework, the chai assertion framework and sinon to mock out AJAX requests. They are all OK.

haiku

javascript fatigue:
longing for a hypertext
already in hand