files/en-us/web/api/htmltablecellelement/headers/index.md
{{ APIRef("HTML DOM") }}
The headers property of the {{domxref("HTMLTableCellElement")}} interface
contains a list of IDs of {{HTMLElement("th")}} elements that are headers for this specific cell.
A string containing space-separated IDs.
This example lists the ID of the last clicked cell of the table:
<table>
<thead>
<tr>
<th rowspan="2" id="h">Homework (ID = h)</th>
<th colspan="3" id="e">Exams (ID = e)</th>
<th colspan="3" id="p">Projects (ID = p)</th>
</tr>
</thead>
<tbody>
<tr>
<th id="e1" headers="e">1 (ID = e1)</th>
<th id="e2" headers="e">2 (ID = e2)</th>
<th id="ef" headers="e">Final (ID = ef)</th>
<th id="p1" headers="p">1 (ID = p1)</th>
<th id="p2" headers="p">2 (ID = p2)</th>
<th id="pf" headers="p">Final (ID = pf)</th>
</tr>
<tr>
<td headers="h">15%</td>
<td headers="e e1">15%</td>
<td headers="e e2">15%</td>
<td headers="e ef">20%</td>
<td headers="p p1">10%</td>
<td headers="p p2">10%</td>
<td headers="p pf">15%</td>
</tr>
</tbody>
</table>
IDs of headers of the last clicked cell: <output>none</output>.
table {
border-collapse: collapse;
}
th,
td,
table {
border: 1px solid black;
}
button {
margin: 1em 1em 1em 0;
}
const table = document.querySelector("table");
const output = document.querySelector("output");
table.addEventListener("click", (ev) => {
output.textContent = ev.target.headers ? ev.target.headers : "none";
});
{{EmbedLiveSample("Examples")}}
{{Specifications}}
{{Compat}}