An airport-style text effect without a noisy interface

Airport information-board effects animate characters until they settle on a final message. The technique can be charming for a short decorative headline, but it is a poor way to deliver urgent information or frequently changing data.

The original jQuery plugin is not distributed here. This restored page explains how to approach the effect in a new implementation without depending on an unverified download.

Keep one stable text alternative

Render the final text as the semantic content. If you add an animated visual layer, hide that duplicate from assistive technology with aria-hidden="true". Do not announce every intermediate random character through a live region.

For essential status information, show the final value immediately. An animation can accompany the change, but it should not delay the moment a person can read the result.

Animate within a small boundary

Reserve enough width to avoid shifting surrounding content. A monospace font can simplify per-character cells, but test punctuation and different scripts rather than assuming one JavaScript code unit equals one visible character.

Use a short, bounded sequence and stop after it completes. Avoid repeatedly restarting the effect when an element appears on screen. If the page goes into the background, there is no value in spending work on invisible character changes.

Offer a motion-free experience

@media (prefers-reduced-motion: reduce) {
  .flap-character { animation: none; transition: none; }
}

For script-driven animation, check the same preference before scheduling it and render the final state immediately. The Web Animations API offers a browser-native place to start, but it does not decide accessibility policy for you.

Use the effect for a single short line, then let the rest of the page remain quiet. A useful information board is judged by how quickly people understand it.