beta

Scramble Text `<mv-scramble-text>`

Efeito de decodificação: glifos aleatórios se resolvem no texto real (a partir do início, do fim, do centro ou ao acaso) ao aparecer na tela, ao passar o mouse ou no foco. O texto real fica no lugar e só os caracteres ainda não resolvidos são mascarados, com glifos da mesma largura pintados exatamente sobre as suas caixas, então nada se mexe em nenhuma fonte, a quebra de linha é igual à de um texto comum, e um valor alterado só decodifica os caracteres que mudaram.

Categoria	Texto animado
Tipo	Web Component (`<mv-scramble-text>`)
Status	beta
Keywords	scramble, decrypt, decode, hacker, glitch, hover, hyper-text, shuffle, accessible

When to use

A heading or label should decrypt from random glyphs into the real text on view, hover or focus
A tech or security brand needs a decode effect that never shifts layout, even in a proportional font or mid-sentence
A changing value such as a key, code or status should visibly decode only the characters that changed

Avoid when

A recurring RGB-split glitch look is wanted instead of a one-time resolve → use Glitch Text instead
Long paragraphs; per-character scrambling slows reading and draws too much attention

Instalação

node scripts/add.mjs scramble-text --out ./src/marvelous

Agente de IA com o servidor MCP do Marvelous UI: install_components({ slugs: ["scramble-text"], target_dir: "<absolute path>/src/marvelous", framework: "react" }).

Arquivos copiados (dependências incluídas): tokens/tokens.css, core/base.css, core/dom.js, core/element.js, core/motion.js, core/observe.js, components/scramble-text/scramble-text.js, components/scramble-text/scramble-text.css.

Uso

Início rápido, a menor marcação que funciona:

<h2><mv-scramble-text>Access granted</mv-scramble-text></h2>

Marcação de referência, para usar como ponto de partida e personalizar com atributos, data-* e variáveis CSS:

<div id="st-demo" style="display:grid;gap:1.75rem;justify-items:center;text-align:center;width:min(100%,44rem);margin-inline:auto">
  <div style="display:inline-flex;align-items:center;gap:.6rem;padding:.4rem .85rem;border:1px solid var(--mv-border);border-radius:var(--mv-radius-full);background:var(--mv-surface);font-size:.8rem;color:var(--mv-fg-muted)">
    <span style="width:.5rem;height:.5rem;border-radius:50%;background:var(--mv-success);box-shadow:0 0 0 3px color-mix(in oklch,var(--mv-success) 25%,transparent)"></span>
    <mv-scramble-text monospace duration="1200" delay="200" style="letter-spacing:.08em">SECURE CHANNEL · AES-256</mv-scramble-text>
  </div>

  <h2 style="margin:0;font:700 clamp(1.9rem,4.6vw,3.2rem)/1.1 var(--mv-font-display);letter-spacing:-.035em">
    <mv-scramble-text reveal="random" duration="1400" trigger="view hover" colors="var(--mv-accent), var(--mv-info), var(--mv-fg-subtle)">Your data, encrypted end to end.</mv-scramble-text>
  </h2>

  <nav aria-label="Demo" style="display:flex;gap:.35rem;flex-wrap:wrap;justify-content:center;font:500 .95rem/1 var(--mv-font-mono);text-transform:uppercase;letter-spacing:.06em">
    <a href="#" style="padding:.55rem .8rem;border-radius:var(--mv-radius-md);color:inherit;text-decoration:none;background:var(--mv-bg-muted)"><mv-scramble-text trigger="hover" duration="500">Projects</mv-scramble-text></a>
    <a href="#" style="padding:.55rem .8rem;border-radius:var(--mv-radius-md);color:inherit;text-decoration:none;background:var(--mv-bg-muted)"><mv-scramble-text trigger="hover" duration="500">Studio</mv-scramble-text></a>
    <a href="#" style="padding:.55rem .8rem;border-radius:var(--mv-radius-md);color:inherit;text-decoration:none;background:var(--mv-bg-muted)"><mv-scramble-text trigger="hover" duration="500">Journal</mv-scramble-text></a>
    <a href="#" style="padding:.55rem .8rem;border-radius:var(--mv-radius-md);color:inherit;text-decoration:none;background:var(--mv-bg-muted)"><mv-scramble-text trigger="hover" duration="500" reveal="end">Contact</mv-scramble-text></a>
  </nav>

  <div style="display:flex;align-items:center;gap:.75rem;flex-wrap:wrap;justify-content:center">
    <span style="font-size:.8rem;color:var(--mv-fg-muted)">Deploy key</span>
    <code style="padding:.35rem .6rem;border-radius:var(--mv-radius-sm);background:var(--mv-bg-muted);font-size:.9rem"><mv-scramble-text id="st-demo-key" monospace trigger="manual" duration="700" text="mv_live_7Q4K-92XD-LM0A"></mv-scramble-text></code>
    <button type="button" class="mv-button" data-variant="outline" data-size="sm" id="st-demo-rotate">Rotate key</button>
  </div>

  <p style="margin:0;font-size:.85rem;color:var(--mv-fg-subtle)">Hover or focus the heading and the links to replay; rotating the key decodes only the characters that change.</p>
</div>
<script type="module">
  const key = document.getElementById("st-demo-key");
  const button = document.getElementById("st-demo-rotate");
  const block = () => Array.from({ length: 4 }, () => "ABCDEFGHJKLMNPQRSTUVWXYZ0123456789"[Math.floor(Math.random() * 33)]).join("");
  button?.addEventListener("click", () => {
    const parts = key.text.split("-");
    parts[1 + Math.floor(Math.random() * 2)] = block();
    key.text = parts.join("-");
  });
</script>

API

Attributes

Name	Tipo	Default	Description
`trigger`	view \| load \| hover \| focus \| manual	`view`	Combinable ("view hover"). hover replays on pointer hover (not touch) and on keyboard focus; focus replays on focus only. Hover and focus listen on the closest link, button or focusable ancestor.
`duration`	number (ms)	`900`	Time until the last character resolves.
`speed`	number (ms)	`45`	How often glyphs change.
`delay`	number (ms)	`0`	Extra wait before characters start resolving.
`reveal`	start \| end \| center \| random	`start`	Resolution order.
`glyphs`	string	`A-Z 0-9 #%&*+=<>…`	Glyph set (e.g. "01" for binary, katakana…). The default set keeps case and turns digits into digits. Glyphs are picked close in width to each real character.
`colors`	list of CSS colors		Colors picked at random for each glyph.
`monospace`	boolean		Monospace font (terminal look). The width never changes without it either.
`text`	string		Target text (otherwise the element's text). Setting a new value decodes only the characters that changed.
`data-state`	scrambling \| done		Set by the element: scrambling (glyphs showing) or done (real text only).

Methods

Name	Description
`play() / replay()`	Scrambles, then resolves again.

Events

Name	Description
`mv-end`	All characters have resolved.

CSS classes

Name	Description
`mv-scramble-text-text / -glyphs / -char`	Real text (one plain text node), aria-hidden out-of-flow glyph layer, one glyph box per character on that layer.

CSS variables

Name	Default	Description
`--mv-scramble-text-glyph`	`var(--mv-accent-fg)`	Glyph color (also the color of the lock-in echo).

Accessibility

The real text is always one plain, visible text node: screen readers, find-in-page, selection, copy and translation get it unchanged, even mid-animation. Unresolved characters are only masked (a CSS highlight makes them transparent); glyphs live on an aria-hidden, out-of-flow layer (pointer-events none, user-select none) and are painted as generated content with empty alternative text, so they are never read nor found. Each glyph sits on its character’s measured box, so the layout never shifts and kerning is untouched, in any font. With reduced motion (system or data-motion="reduce") or forced colors, the final text shows at once and nothing scrambles. hover also replays on keyboard focus and ignores touch; focus replays on focus only. Printing settles to the real text. The frame loop pauses off-screen and in hidden tabs. Without CSS highlights (older browsers) the real text is hidden as a whole during the effect and the layer draws it, still at the same boxes.