htmx

Original：🇺🇸 English

Translated

Complete reference for HTMX — the HTML-first library for modern browser features without JavaScript. Use when tasks involve hx-* attributes, HTMX AJAX requests, swap strategies, server-sent events, WebSockets, or hypermedia-driven UIs.

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Sourcedamusix/skills

Added on2026-02-13

NPX Install

npx skill4agent add damusix/skills htmx

SKILL.md Content

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HTMX Skill

Use this skill for HTMX implementation and integration. Read only the reference file(s) needed for the task.

Quick Start

Identify the domain of the task (attributes, requests, swapping, events, patterns).
Open the matching file from
```
references/
```
.
Implement using HTML-first, hypermedia-driven patterns.
Validate that server responses return HTML fragments, not JSON.

Critical Rules

HTMX expects HTML responses from the server, not JSON.
Most attributes inherit to child elements. Not inherited:
```
hx-trigger
```
,
```
hx-on*
```
,
```
hx-swap-oob
```
,
```
hx-preserve
```
,
```
hx-history-elt
```
,
```
hx-validate
```
. Use
```
hx-disinherit
```
or
```
unset
```
to stop inheritance of other attributes.
Default swap strategy is
```
innerHTML
```
. Always confirm the intended swap method.
Non-GET requests automatically include the closest enclosing form's values.
Use
```
hx-boost="true"
```
for progressive enhancement — pages must work without JS.
Escape all user-supplied content server-side to prevent XSS.
HTMX adds/removes CSS classes during the request lifecycle — use these for transitions and indicators.
All
```
hx-*
```
attributes can also be written as
```
data-hx-*
```
for HTML validation compliance.

Reference Map

All
```
hx-*
```
attributes, values, and modifiers:
```
references/attributes.md
```
Triggers, headers, parameters, CSRF, caching, CORS:
```
references/requests.md
```
Swap methods, targets, OOB swaps, morphing, view transitions:
```
references/swapping.md
```
Events, JS API, configuration, extensions, debugging:
```
references/events-api.md
```
Common UI patterns and examples:
```
references/patterns.md
```
Cross-file index and routing:
```
references/REFERENCE.md
```

Task Routing

Adding HTMX behavior to elements ->
```
references/attributes.md
```
Configuring how/when requests fire ->
```
references/requests.md
```
Controlling where/how responses render ->
```
references/swapping.md
```
Handling events, JS interop, or config ->
```
references/events-api.md
```
Building common UI patterns (search, infinite scroll, modals, etc.) ->
```
references/patterns.md
```
Cross-cutting concerns or architecture ->
```
references/REFERENCE.md
```
then domain-specific files