HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>\s{2,}</title>

</head>

<body>

  <h1>Whitespace cleanup</h1>

  <pre id="out"></pre>

  <script>

    var messy = "Hello   world\t\ttest";

    document.getElementById("out").textContent =

      messy.replace(/\s{2,}/g, " ") + "\n" +

      messy.match(/\s{2,}/g).join(" | ");

  </script>

</body>

</html>

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