HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>image fallback</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 480px; }
    img { width: 120px; height: 90px; object-fit: cover; border-radius: 6px; margin: 0 8px 8px 0; border: 1px solid #cbd5e1; }
    #log { margin-top: 12px; color: #047857; font-weight: 600; }
  </style>
</head>
<body>
  <p>Both images request broken URLs; the handler swaps in a fallback:</p>
  <img class="thumb" alt="Photo A">
  <img class="thumb" alt="Photo B">
  <div id="log"></div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    var fallback = "https://via.placeholder.com/120/cccccc/666666?text=Fallback";
    $("img.thumb")
      .on("error", function() {
        $(this).attr("src", fallback);
        $("#log").append("<div>Replaced: " + $(this).attr("alt") + "</div>");
      })
      .attr("src", "https://httpstat.us/404");
  </script>
</body>
</html>

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