@testqueryparkui/qp-es-ui/src/util/exportToExcel.js

Query Park UI Components for React

const dataToExcel = async (data) => {
    //console.log('HERE')
    let success = false
    var uri = 'data:application/vnd.ms-excel;base64,'
    , tmplWorkbookXML = '<?xml version="1.0"?><?mso-application progid="Excel.Sheet"?><Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">'
      + '<DocumentProperties xmlns="urn:schemas-microsoft-com:office:office"><Author>Axel Richter</Author><Created>{created}</Created></DocumentProperties>'
      + '<Styles>'
      + '<Style ss:ID="Currency"><NumberFormat ss:Format="Currency"></NumberFormat></Style>'
      + '<Style ss:ID="Date"><NumberFormat ss:Format="Medium Date"></NumberFormat></Style>'
      + '</Styles>' 
      + '{worksheets}</Workbook>'
    , tmplWorksheetXML = '<Worksheet ss:Name="{nameWS}"><Table>{rows}</Table></Worksheet>'
    , tmplCellXML = '<Cell{attributeStyleID}{attributeFormula}><Data ss:Type="{nameType}">{data}</Data></Cell>'
    , base64 = function(s) { return window.btoa(unescape(encodeURIComponent(s))) }
    , format = function(s, c) { return s.replace(/{(\w+)}/g, function(m, p) { return c[p]; }) }    
      var ctx = "";
      var workbookXML = "";
      var worksheetsXML = "";
      var rowsXML = "";

      for(let i=0; i<data.length; i++){
        //if (!tables[i].nodeType) tables[i] = document.getElementById(tables[i]);
        for (var j = 0; j < data[i].value.length; j++) {
          rowsXML += '<Row>'
          for (let k in data[i].value[j]) {
            //var dataType = tables[i].rows[j].cells[k].getAttribute("data-type");
            //var dataStyle = tables[i].rows[j].cells[k].getAttribute("data-style");
            //var dataValue = tables[i].rows[j].cells[k].getAttribute("data-value");
            let dataValue = data[i].value[j][k];
           // var dataFormula = tables[i].rows[j].cells[k].getAttribute("data-formula");
            //dataFormula = (dataFormula)?dataFormula:(appname=='Calc' && dataType=='DateTime')?dataValue:null;
            ctx = {  attributeStyleID: ''
                   , nameType: 'String'
                   , data:dataValue
                   , attributeFormula: ''
                  };
            rowsXML += format(tmplCellXML, ctx);
          }
          rowsXML += '</Row>'
        }
        ctx = {rows: rowsXML, nameWS: data[i].key};
        worksheetsXML += format(tmplWorksheetXML, ctx);
        rowsXML = "";
      }

      ctx = {created: (new Date()).getTime(), worksheets: worksheetsXML};
      workbookXML = format(tmplWorkbookXML, ctx);

//console.log(workbookXML);

      var link = document.createElement("A");
      link.href = uri + base64(workbookXML);
      link.download = 'querypark.xls';
      link.target = '_blank';
      document.body.appendChild(link);
      link.click();
      document.body.removeChild(link);
      if(link)
      {
        success = true
        return success
      } 
    }
  

  export default dataToExcel