rmDuplicate.html

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>Document</title>
  <script type="text/javascript">
    let a = ["a", "c", "c", "c", "a", "a"];
    let count = 0;

    function rmDuplicate(rawData) {
      for (var i = 0; i <= a.length; i++) {
        for (var j = 0; j <= a.length; j++) {
          if (a[i] == a[j]) {
            count = count + 1;
            console.log(`IF Count:::> ${count}`);
          } else {
            count = 0;
            console.log(
              " else count = " + count + " because " + a[j] + " at position"
            );
          }
          if (count >= 3) {
            console.log(` a[j]: ${a[j]} and count: ${count}`);
            break;
          }
        }
        if (count >= 3) {
          // console.log('count = ' + count + 'because ' + a[i] + 'at position' + i + ' to next 3');
          console.log("count " + count + ", Now removing...");

          for (var k = 0; k <= count; k++) {
            console.log(`before:  ${a}`);
            a.splice(i, 1);
            console.log(`after ${a}`);
          }

          count = 0;
          i = 0;
        }
        console.log(` Now array: ${a}`);
      }
    }
    rmDuplicate(a);
  </script>
</head>

<body>

</body>

</html>