Tada

The element shrinks a touch as if taking a breath, grows and wiggles side to side, then settles back to its normal size. Made for reveals and “well done” moments.

Badge unlockedSeven days in a row

How to use it

Paste the snippet just before </head>.
Add data-tada to any element. It plays once when it scrolls into view.
Add data-loop to play it again every so often.

Options

Add any of these attributes to the same element.

`data-scale`	How big it grows. Default 1.1.
`data-angle`	How far each wiggle tilts, in degrees. Default 4.
`data-duration`	How long it takes. Default 1100 ms.
`data-delay`	Wait before the first tada. Default 0 ms.
`data-loop`	Tada again every so often while it’s on screen.
`data-every`	Rest between plays, when looping. Default 1600 ms.
`data-hover`	Also play it when the pointer moves over the element or it’s tapped.

Call animacious.tada(el) to play it from your own code, for example when a goal is reached.

1 · Snippet

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/bundles/anime.umd.min.js"></script>
<script>
  (function () {
    // Tada: the element shrinks a touch as if taking a breath, grows and
    // wiggles side to side, then settles back to its normal size. Good for a
    // reveal or a "well done".
    // Usage: <div data-tada>…</div>
    // Optional: data-scale (how big it grows, default 1.1), data-angle (degrees
    // of each wiggle, default 4), data-duration (ms, default 1100), data-delay
    // (ms before the first tada), data-loop (tada again every so often while in
    // view), data-every (ms of rest between loops, default 1600), data-hover
    // (also tada on hover or tap).
    // Script use: animacious.tada(el) plays it from code.
    var DEFAULTS = { scale: 1.1, angle: 4, duration: 1100, delay: 0, every: 1600 };

    function on(v) { return v !== undefined && v !== 'false'; }
    function reduced() { return window.matchMedia('(prefers-reduced-motion: reduce)').matches; }

    function play(el, done) {
      var s = el._tda;
      if (s.busy) { if (done) s.after = done; return; }
      if (reduced()) { if (done) done(); return; }
      s.busy = true;
      var d = el.dataset;
      function finish() {
        s.busy = false;
        var after = s.after;
        s.after = null;
        if (done) done();
        if (after) after();
      }
      var sc = +d.scale || DEFAULTS.scale;
      var a = d.angle === undefined ? DEFAULTS.angle : +d.angle;
      var low = 1 - (sc - 1);
      anime.animate(el, {
        keyframes: {
          '0%': { scale: 1, rotate: 0 },
          '10%': { scale: low, rotate: -a * 0.8 },
          '20%': { scale: low, rotate: -a * 0.8 },
          '30%': { scale: sc, rotate: a },
          '40%': { rotate: -a },
          '50%': { rotate: a },
          '60%': { rotate: -a },
          '70%': { rotate: a * 0.8 },
          '80%': { rotate: -a * 0.5 },
          '90%': { scale: sc, rotate: a * 0.3 },
          '100%': { scale: 1, rotate: 0, ease: 'out(3)' }
        },
        ease: 'inOut(2)',
        duration: +d.duration || DEFAULTS.duration,
        onComplete: finish
      });
    }

    function cycle(el) {
      var s = el._tda;
      play(el, function () {
        if (!on(el.dataset.loop)) return;
        clearTimeout(s.timer);
        s.timer = setTimeout(function () {
          if (s.visible) cycle(el);
          else s.waiting = true;
        }, +el.dataset.every || DEFAULTS.every);
      });
    }

    function init() {
      var io = new IntersectionObserver(function (entries) {
        entries.forEach(function (e) {
          var s = e.target._tda;
          s.visible = e.isIntersecting;
          if (!e.isIntersecting) return;
          if (!s.started) {
            s.started = true;
            setTimeout(function () { cycle(e.target); }, +e.target.dataset.delay || DEFAULTS.delay);
          } else if (s.waiting) {
            s.waiting = false;
            cycle(e.target);
          }
        });
      }, { threshold: 0.2 });
      document.querySelectorAll('[data-tada]').forEach(function (el) {
        if (el._tda) return;
        el._tda = {};
        if (on(el.dataset.hover)) {
          el.addEventListener('pointerenter', function () { play(el); });
          el.addEventListener('pointerdown', function () { play(el); });
        }
        if (!reduced()) io.observe(el);
      });
    }

    window.animacious = window.animacious || {};
    window.animacious.tada = function (el) { if (el._tda) play(el); };
    if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init);
    else init();
  })();
</script>

2 · Your HTML

<div class="badge" data-tada>Badge unlocked</div>

<!-- or bigger, repeating: -->
<div class="badge" data-tada data-scale="1.2" data-loop>Badge unlocked</div>