function tableCreate() {
  var body = document.body,
    tbl = document.createElement('table');
  tbl.style.width = '100px';
  tbl.style.border = '1px solid black';

  for (var i = 0; i < 3; i++) {
    var tr = tbl.insertRow();
    for (var j = 0; j < 2; j++) {
      if (i == 2 && j == 1) {
        break;
      } else {
        var td = tr.insertCell();
        td.appendChild(document.createTextNode('Cell'));
        td.style.border = '1px solid black';
        if (i == 1 && j == 1) {
          td.setAttribute('rowSpan', '2');
        }
      }
    }
  }
  body.appendChild(tbl);
}
tableCreate();