HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>$.get() jqXHR chain</title>
  <style>
    body { font-family: sans-serif; padding: 16px; max-width: 560px; }
    button { margin-right: 8px; padding: 8px 14px; cursor: pointer; border: none; border-radius: 6px; color: #fff; }
    #ok { background: #2563eb; }
    #bad { background: #dc2626; }
    #spinner { margin-top: 12px; color: #64748b; font-size: 13px; }
    ul { margin-top: 12px; padding-left: 20px; font-size: 13px; }
  </style>
</head>
<body>
  <button type="button" id="ok">Load comments</button>
  <button type="button" id="bad">Invalid URL</button>
  <div id="spinner"></div>
  <ul id="list"><li>Click a button.</li></ul>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    function loadComments(url) {
      $("#spinner").text("Loading…");
      return $.get(url)
        .done(function(comments) {
          var html = comments.slice(0, 3).map(function(c) {
            return "<li>" + c.email + ": " + c.body.substring(0, 40) + "…</li>";
          }).join("");
          $("#list").html(html);
        })
        .fail(function(_jqXHR, textStatus) {
          $("#list").html("<li>Could not load (" + textStatus + ")</li>");
        })
        .always(function() {
          $("#spinner").text("");
        });
    }
    $("#ok").on("click", function() {
      loadComments("https://jsonplaceholder.typicode.com/posts/1/comments");
    });
    $("#bad").on("click", function() {
      loadComments("https://httpbin.org/status/404");
    });
  </script>
</body>
</html>

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jQuery.get() — jqXHR done/fail/always (Try It)