HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>fx.off accessibility</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 30rem; }

    button { padding: 8px 14px; margin: 0 8px 12px 0; }

    #a11y-panel { display: none; padding: 14px; background: #ecfdf5; border: 1px solid #10b981; border-radius: 8px; margin-top: 12px; }

    #a11y-note { background: #f1f5f9; padding: 10px 12px; border-radius: 6px; font-size: 14px; margin-bottom: 12px; }

  </style>

</head>

<body>

  <p id="a11y-note">Checking prefers-reduced-motion…</p>

  <button type="button" id="simulate-reduced">Simulate reduced motion</button>

  <button type="button" id="panel-toggle">Toggle panel (slideToggle slow)</button>

  <div id="a11y-panel">This panel uses slideToggle("slow"). With fx.off true it snaps open/closed.</div>

  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>

  <script>

    var reducedMotion = window.matchMedia("(prefers-reduced-motion: reduce)").matches;

    if (reducedMotion) {

      jQuery.fx.off = true;

      $("#a11y-note").text("Reduced motion detected — jQuery.fx.off = true");

    } else {

      $("#a11y-note").text("OS allows motion — jQuery.fx.off = " + jQuery.fx.off + ". Use Simulate to test.");

    }

    $("#simulate-reduced").on("click", function () {

      jQuery.fx.off = true;

      $("#a11y-note").text("Simulated reduced motion — effects disabled globally");

    });

    $("#panel-toggle").on("click", function () {

      $("#a11y-panel").slideToggle("slow");

    });

  </script>

</body>

</html>

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jQuery.fx.off — reduced motion accessibility (Try It)