Sorting: Custom Sort

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingGrid Demo</title>
  <script nonce="undefined" src="https://cdn.zinggrid.com/zinggrid.min.js"></script>
  <style>
    body {
      background: #e6e6e6;
    }

    zing-grid {
      overflow: hidden;
    }

    zing-grid[loading] {
      height: 373px;
    }
  </style>
</head>

<body>
  <zing-grid caption="Class Schedules" sort viewport-stop data='[
        {
          "class": "Biology 101",
          "days": "M/W",
          "time": "7:00am - 8:30am",
          "instructor": "Foster"
        }, {
          "class": "C++ Programming 101",
          "days" : "-- TBD --",
          "time": "-- TBD --",
          "instructor": "Smith"
        }, {
          "class": "Biology 101",
          "days" : "T/TH",
          "time": "2:30pm - 4:00pm",
          "instructor": "Doe"
        }, {
          "class": "Biology 101",
          "days" : "-- TBD --",
          "time": "-- TBD --",
          "instructor": "-- TBD --"
        }, {
          "class": "C++ Programming 101",
          "days" : "M",
          "time": "10:00pm - 12:30pm",
          "instructor": "-- TBD --"
        }
      ]'>
    <zg-colgroup>
      <zg-column index="class"></zg-column>
      <zg-column index="days" sorter="deprioritizeTBD" sort-asc></zg-column>
      <zg-column index="time"></zg-column>
      <zg-column index="instructor"></zg-column>
    </zg-colgroup>
  </zing-grid>
  <script>
    ZingGrid.setLicense(['26ccbfec16b8be9ee98c7d57bee6e498']);

    function deprioritizeTBD(a, b) {
      if (a.days == '-- TBD --') return 1;
      if (b.days == '-- TBD --') return -1;
      return a.days > b.days ? 1 : -1;
    }
  </script>
</body>

</html>

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>ZingGrid Demo</title>
  <script src="https://cdn.zinggrid.com/zinggrid.min.js"></script>
</head>

<body>
  <zing-grid caption="Class Schedules" sort viewport-stop data='[
        {
          "class": "Biology 101",
          "days": "M/W",
          "time": "7:00am - 8:30am",
          "instructor": "Foster"
        }, {
          "class": "C++ Programming 101",
          "days" : "-- TBD --",
          "time": "-- TBD --",
          "instructor": "Smith"
        }, {
          "class": "Biology 101",
          "days" : "T/TH",
          "time": "2:30pm - 4:00pm",
          "instructor": "Doe"
        }, {
          "class": "Biology 101",
          "days" : "-- TBD --",
          "time": "-- TBD --",
          "instructor": "-- TBD --"
        }, {
          "class": "C++ Programming 101",
          "days" : "M",
          "time": "10:00pm - 12:30pm",
          "instructor": "-- TBD --"
        }
      ]'>
    <zg-colgroup>
      <zg-column index="class"></zg-column>
      <zg-column index="days" sorter="deprioritizeTBD" sort-asc></zg-column>
      <zg-column index="time"></zg-column>
      <zg-column index="instructor"></zg-column>
    </zg-colgroup>
  </zing-grid>
</body>

</html>

body {
  background: #e6e6e6;
}

zing-grid {
  overflow: hidden;
}

function deprioritizeTBD(a, b) {
  if (a.days == '-- TBD --') return 1;
  if (b.days == '-- TBD --') return -1;
  return a.days > b.days ? 1 : -1;
}