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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
  
  Name: <input type="text" id="fname"><br>
  <script>
    function myFunction() {
          var colours = ["red", "green", "yellow", "green", "blue", "purple"];
          var name = document.getElementById("fname").value;
           var e = name.toLowerCase(),
                t = e.replace(/[^a-z0-9]/g, ""),
                n = parseInt(t, 36) % 6;
       document.getElementById("demo").innerHTML = n + ", " + colours[n];
    }
    
</script>
  
  <button onclick="myFunction()">flair class</button>
  <p id="demo"></p>
  
</body>
</html>
Output

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