consistent-table-row-length

Warns when a <table> row's number of columns is inconsistent with the table's base column count — fewer (a missing column) or more (an extra column), accounting for colspan / rowspan.

Unlike its sibling splits of the former table-row-column-alignment rule — no-table-cell-overlap, no-table-span-overflow, and no-empty-table-track — this is not a table model error: HTML Living Standard §4.9.12.1 Forming a table, Step 7 grows the table to fit a wider row, and a narrower row is only a table model error where no-empty-table-track already catches it (a column no cell ever anchors to). A ragged table is nevertheless almost always a mistake, which is why this check exists and why its default severity stays warning rather than the error of its siblings. It reports nothing on a table no-table-cell-overlap already reports on, since row widths derived from an overlapping table are no longer reliable.

❌ Examples of incorrect code for this rule

<table>
  <tr>
    <th></th>
  </tr>
  <tr>
    <td></td>
    <td class="extra"></td>
  </tr>
</table>

<table>
  <tr>
    <th></th>
    <th></th>
    <th></th>
  </tr>
  <tr>
    <td></td>
    <td></td>
  </tr>
</table>

✅ Examples of correct code for this rule

<table>
  <tr>
    <th></th>
  </tr>
  <tr>
    <td></td>
  </tr>
</table>

Interface

{
  "consistent-table-row-length": boolean
}

Default Severity

warning