HTMX

<script src="https://unpkg.com/htmx.org@1.9.2"></script>

<button hx-get="/hello" hx-target="#result">Say Hi</button>
<div id="result"></div>

<!-- /hello response -->
<p>Hello from server</p>

<a hx-get="/page">Load Page</a>
<form hx-post="/submit"></form>

<button hx-get="/data" hx-target="#box"></button>
<div id="box"></div>

<input hx-get="/search" hx-trigger="keyup changed delay:300ms" hx-target="#results" />

<div hx-get="/frag" hx-swap="innerHTML"></div>

<div hx-swap-oob="true" id="msg"></div>

hx-swap="outerHTML transition:true swap:1s"

<form hx-post="/submit" hx-target="#status">
	<input name="name" />
	<button type="submit">Send</button>
</form>
<div id="status"></div>

<input id="user-id" name="id" /> <button hx-post="/update" hx-include="#user-id">Update</button>

<button hx-post="/save" hx-vals='{"id": 42, "active": true}'>Save</button>

<button hx-get="/load" hx-indicator="#spinner">Load</button>
<div id="spinner" class="htmx-indicator">Loading...</div>

<a hx-get="/page" hx-push-url="true">Go</a>

<div hx-get="/time" hx-trigger="every 5s"></div>

document.body.addEventListener('htmx:afterSwap', e => {
	console.log('Swap complete');
});

<script src="https://unpkg.com/htmx.org/dist/ext/json-enc.js"></script>
<form hx-post="/api" hx-ext="json-enc"></form>

@app.route("/hello")
def hello():
    return "<p>Hello, HTMX!</p>"

<button hx-get="/hello" hx-target="#msg">Click</button>
<div id="msg"></div>