webviktor

<table>
<tr id="weekRow">
</tr>
</table>

(() => {
  const weekRow = document.getElementById('weekRow');
  let date = new Date();
  Array.from(Array(7), () => document.createElement('td'))
    .forEach(td => {
      td.textContent = date.toLocaleString('ru', {
        weekday: 'short'
      });
      date.setDate(date.getDate() + 1);
      weekRow.appendChild(td);
    });
})();