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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Match \x0A</title>
</head>
<body>
  <h1>Newline via hex</h1>
  <pre id="out"></pre>
  <script>
    var text = "line1\x0Aline2";
    document.getElementById("out").textContent =
      /\x0A/.test(text) + "\n" +
      text.split(/\x0A/).join(" | ") + "\n" +
      "same as \\n: " + /\n/.test(text);
  </script>
</body>
</html>

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JavaScript RegExp \xHH — newline \x0A (Try It)