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Javascript insensitive sort table on click

I'm a totally fresh JS guy so please be understandable. In my app I want to give the user ability to filter data in my table when he/she clicks on the header (sorting on click).

What I have is a JS file which sorts everything as except for one column - full_name, it seems like it's sorting case sensitive:

Which I thought I was handling by innerHTML.toUpperCase, am I wrong?

Snippet with sample html table below:

function sortTable(n) {
  var table, rows, switching, i, x, y, shouldSwitch, dir, switchcount = 0;
  table = document.getElementById("data_table");
  switching = true;
  dir = "asc";
  while (switching) {
    switching = false;
    rows = table.rows;
    for (i = 1; i < (rows.length - 1); i++) {
      shouldSwitch = false;
      x = rows[i].getElementsByTagName("TD")[n];
      y = rows[i + 1].getElementsByTagName("TD")[n];
      if (dir == "asc") {
        if (x.innerHTML.toUpperCase() > y.innerHTML.toUpperCase()) {
          shouldSwitch = true;
          break;
        }
      } else if (dir == "desc") {
        if (x.innerHTML.toUpperCase() < y.innerHTML.toUpperCase()) {
          shouldSwitch = true;
          break;
        }
      }
    }
    if (shouldSwitch) {
      rows[i].parentNode.insertBefore(rows[i + 1], rows[i]);
      switching = true;
      switchcount ++;
    } else {
      if (switchcount == 0 && dir == "asc") {
        dir = "desc";
        switching = true;
      }
    }
  }
}
<table class="table table-striped table-bordered" id="data_table">
  <thead>
    <tr>
      <th onclick="sortTable(0)">Full Name</th>
    </tr>
  </thead>
  <tbody>
      <tr>
        <td>EEEEeFFFFgggHH GoodeC</td>
      </tr>
      <tr>
        <td>bbbBBBbb GoodeX</td>
      </tr>
      <tr>
        <td>ccccccc</td>
      </tr>
      <tr>
        <td>caregiver testing testing</td>
      </tr>
      <tr>
        <td>aaaaaaa test GoodeE</td>
      </tr>
  </tbody>
</table>

What did I missed here?

Via Active questions tagged javascript - Stack Overflow https://ift.tt/lUEqm3v
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