sheets.rows.index Number

The zero-based index of the row in the sheet. Defaults to the index of the object in the array.

Example - setting row height by index

<script>
var workbook = new kendo.ooxml.Workbook({
  sheets: [{
      rows: [{
          cells: [{ value: "this row is 100px high" }],
          height: 100,
          index: 1
      }]
  }]
});
workbook.toDataURLAsync().then(function(dataURL) {
  kendo.saveAs({
    dataURI: dataURL,
    fileName: "Test.xlsx"
  });
});
</script>