converts an html table to a csv string, and makes it available as a file download

html2csv.js

function convertTableToCsv(tableSelector) {
  return _.map($(tableSelector + ' tr'), function(row) {
    return _.map($(row).find('th, td'), function(datum) {
      return datum.textContent.replace(/,/g, '');
    }).join(',');
  }).join('\n');
}

// to download
var data = convertTableToCsv('#mytable');
window.location='data:text/csv;charset=utf8,' + encodeURIComponent(data);