HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery checked radio demo</title>
  <style>
    label { display: block; margin: 8px 0; }
    #log { margin-top: 12px; color: #2563eb; font-weight: bold; }
  </style>
</head>
<body>
  <label><input type="radio" name="fruit" value="orange"> orange</label>
  <label><input type="radio" name="fruit" value="apple"> apple</label>
  <label><input type="radio" name="fruit" value="banana"> banana</label>
  <div id="log">Select a fruit</div>
  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
  <script>
    $("input").on("click", function() {
      $("#log").html($("input:checked").val() + " is checked!");
    });
  </script>
</body>
</html>

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jQuery input:checked radio value (Try It)