HTMX

ELI5 — The Vibe Check

HTMX lets you build interactive web apps by adding special attributes to regular HTML — no JavaScript framework needed. Want a button that loads new content? Add hx-get='/api/users' hx-target='#user-list'. The browser fetches HTML from the server and swaps it into the page. It's the 'what if we just sent HTML?' approach to modern web development. Fewer dependencies, less complexity, and your server does the rendering.

Real Talk

HTMX is a lightweight JavaScript library (~14KB) that extends HTML with attributes for AJAX requests, CSS transitions, WebSocket connections, and Server-Sent Events. Instead of building a JSON API + JavaScript frontend, HTMX applications return HTML fragments from the server. It embraces hypermedia as the engine of application state (HATEOAS) and works with any backend language. It's particularly popular in the Python (Django, Flask, FastAPI) and Go ecosystems.

Show Me The Code

<!-- Click button → fetch HTML → swap into #results -->
<button hx-get="/api/search?q=htmx"
        hx-target="#results"
        hx-swap="innerHTML"
        hx-indicator=".spinner">
  Search
</button>

<div id="results">Results appear here</div>
<span class="spinner htmx-indicator">Loading...</span>

When You'll Hear This

"We replaced the React frontend with HTMX and deleted 80% of the JavaScript." / "HTMX is perfect for server-rendered apps that need a sprinkle of interactivity."