В какой формат проще сделать экспорт страницы?

asUtf16 = (str) ->
  buffer = new ArrayBuffer(str.length * 2)
  bufferView = new Uint16Array(buffer)
  bufferView[0] = 0xfeff
  for i in [0..str.length]
    val = str.charCodeAt(i)
    bufferView[i + 1] = val
  bufferView
 
 
makeExcelCsvBlob = (rows) ->  
  new Blob([asUtf16(toTsv(rows)).buffer], {type: "text/csv;charset=UTF-16"})
 
 
toTsv = (rows) ->
  escapeValue = (val) ->
    if typeof val is 'string'
      '"' + val.replace(/"/g, '""') + '"'
    else if val?
      val
    else
      ''
  rows.map((row) -> row.map(escapeValue).join('\t')).join('\n') + '\n'
 
 
downloadExcelCsv = (rows, attachmentFilename) ->
  blob = makeExcelCsvBlob(rows)  
  a = document.createElement('a')
  a.style.display = 'none'
  a.download = attachmentFilename
  document.body.appendChild(a)
  a.href = URL.createObjectURL(blob)
  a.click()
  URL.revokeObjectURL(a.href)
  a.remove()
  return
 
 
# Example:
rows = [
  ['id', 'name', 'age']
  [1, 'John Doe', 43]
  [2, 'Jane Doe', 42]
  [3, 'Foo', 3]
]
 
window.exampleDownload = -> 
  downloadExcelCsv(rows, 'exported-data.csv')

var asUtf16, downloadExcelCsv, makeExcelCsvBlob, rows, toTsv;
 
asUtf16 = function(str) {
  var buffer, bufferView, i, j, ref, val;
  buffer = new ArrayBuffer(str.length * 2);
  bufferView = new Uint16Array(buffer);
  bufferView[0] = 0xfeff;
  for (i = j = 0, ref = str.length; (0 <= ref ? j <= ref : j >= ref); i = 0 <= ref ? ++j : --j) {
    val = str.charCodeAt(i);
    bufferView[i + 1] = val;
  }
  return bufferView;
};
 
makeExcelCsvBlob = function(rows) {
  return new Blob([asUtf16(toTsv(rows)).buffer], {
    type: "text/csv;charset=UTF-16"
  });
};
 
toTsv = function(rows) {
  var escapeValue;
  escapeValue = function(val) {
    if (typeof val === 'string') {
      return '"' + val.replace(/"/g, '""') + '"';
    } else if (val != null) {
      return val;
    } else {
      return '';
    }
  };
  return rows.map(function(row) {
    return row.map(escapeValue).join('\t');
  }).join('\n') + '\n';
};
 
downloadExcelCsv = function(rows, attachmentFilename) {
  var a, blob;
  blob = makeExcelCsvBlob(rows);
  a = document.createElement('a');
  a.style.display = 'none';
  a.download = attachmentFilename;
  document.body.appendChild(a);
  a.href = URL.createObjectURL(blob);
  a.click();
  URL.revokeObjectURL(a.href);
  a.remove();
};
 
 
// Example:
rows = [['id', 'name', 'age'], [1, 'John Doe', 43], [2, 'Jane Doe', 42], [3, 'Foo', 3]];
 
window.exampleDownload = function() {
  return downloadExcelCsv(rows, 'exported-data.csv');
};

row[0] = document.getElementById("p11").textContent;

row[0] = "Hello";

row[0] = ["column head 1", "column head 2", "column head 3"]