HTMLTableCellElement: headers property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The headers property of the HTMLTableCellElement interface contains a list of IDs of <th> elements that are headers for this specific cell.

Value

A string containing space-separated IDs.

Examples

This example lists the ID of the last clicked cell of the table:

HTML

html

<table>
  <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>
  <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>
</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;
}

JavaScript

const table = document.querySelector("table");
const output = document.querySelector("output");

table.addEventListener("click", (ev) => {
  output.textContent = ev.target.headers ? ev.target.headers : "none";
});

Result

Specifications

Specification
HTML Standard # dom-tdth-headers

Browser compatibility

BCD tables only load in the browser