reference table cell to column javascript code example

Example 1: html table to excel javascript

<script type="text/javascript">
var tableToExcel = (function() {
  var uri = 'data:application/vnd.ms-excel;base64,'
    , template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--><meta http-equiv="content-type" content="text/plain; charset=UTF-8"/></head><body><table>{table}</table></body></html>'
    , base64 = function(s) { return window.btoa(unescape(encodeURIComponent(s))) }
    , format = function(s, c) { return s.replace(/{(\w+)}/g, function(m, p) { return c[p]; }) }
  return function(table, name) {
    if (!table.nodeType) table = document.getElementById(table)
    var ctx = {worksheet: name || 'Worksheet', table: table.innerHTML}
    window.location.href = uri + base64(format(template, ctx))
  }
})()
</script>

Example 2: get data from column in table js

function getDataFromColumn(table_id, col) {
    var tab = document.getElementById(table_id);
    var n = tab.rows.length;
    var i, s = null, tr, td;
    var ss = '';

    if (col < 0) {
        return null;
    }

    for (i = 1; i < n; i++) {
        tr = tab.rows[i];
        if (tr.cells.length > col) { 
            td = tr.cells[col];      
            ss += ' ' + td.innerText + ',';
        } 
    }
    return ss;
}

var txt =getDataFromColumn('table_ID', 5);

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