sheets.rows.cells.underline Boolean (default: false)

Setting sheets.rows.cells.underline to true underlines the cell content.

Example - making the cell content underlined

<script>
var workbook = new kendo.ooxml.Workbook({
  sheets: [
      {
          rows: [
            { cells: [ { value: "Uderline", underline: true } ] }
          ]
      }
  ]
});
kendo.saveAs({
  dataURI: workbook.toDataURL(),
  fileName: "Test.xlsx"
});
</script>