HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Path mismatch duplicates</title>
</head>
<body>
  <h1>Duplicate cookies</h1>
  <button type="button" id="run">Create duplicates</button>
  <pre id="out"></pre>
  <script>
    document.getElementById("run").addEventListener("click", function () {
      document.cookie = "username=John; path=/; max-age=604800";
      document.cookie = "username=Jane; path=/account; max-age=604800";
      document.getElementById("out").textContent =
        "Two username cookies (different paths) may appear:\n\n" + document.cookie;
    });
  </script>
</body>
</html>

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JavaScript Cookies Path — duplicate from mismatch (Try It)