tagz.js

function countTags() {
    var inputText = document.getElementById('tags').value;

    // var cleanedText = inputText.replace(/['"]+/g, '');
    // console.log(cleanedText);

    var array = inputText.replace(/"/g, ',').split(',');

    var trimmedArray =  function (array) {
      for (i = 0; i < array.length; i++) {
        trimmedArray[i] = array[i].trim();
      }
    }

    console.log(array);

    var tagsCount = array.length;

    document.getElementById("total-tags").innerHTML = tagsCount;

    array.sort();

    var deduped = array.reduce( function (result, item) {
      var lastItem = result[result.length - 1] || {};

      if (lastItem.text && lastItem.text === item) {
        lastItem.count++;
      } else {
        result.push({
          text: item,
          count: 1
        });
      }
      return result;
    }, [])

    deduped.sort(function(row1, row2) {
      if (row1.count < row2.count) {
        return 1;
      }
      if (row1.count > row2.count) {
        return -1;
      }
      return 0;
    });

    var rowCount = 1;
    for (var i = 0; i <= deduped.length; i++) {

      var itemCount = deduped[i].count;
      var itemText = deduped[i].text;

      if (itemText.trim().length !== 0) {
        var table = document.getElementById("tableBody");

        var row = table.insertRow(-1);

        var cell1 = row.insertCell(0)
        var cell2 = row.insertCell(1);
        var cell3 = row.insertCell(2);

        cell1.innerHTML = rowCount;
        cell2.innerHTML = itemText;
        cell3.innerHTML = itemCount;

        rowCount++;
      }
  }

}