Element: ariaColIndex property
Baseline
2023
Newly available
Since October 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
The ariaColIndex property of the Element interface reflects the value of the aria-colindex attribute, which defines an element's column index or position with respect to the total number of columns within a table, grid, or treegrid.
Value
A string which contains an integer.
Examples
In this example the aria-colindex attribute on the element with an ID of role-heading is set to "1". Using ariaColIndex we update the value to "2".
html
<table
id="semantic-table"
role="table"
aria-label="Semantic Elements"
aria-describedby="semantic_elements_table_desc"
aria-rowcount="100">
<caption id="semantic_elements_table_desc">
Semantic Elements to use instead of ARIA's roles
</caption>
<thead role="rowgroup">
<tr role="row">
<th
role="columnheader"
id="role-heading"
aria-sort="none"
aria-rowindex="1"
aria-colindex="1">
ARIA Role
</th>
<th
role="columnheader"
id="element-heading"
aria-sort="none"
aria-rowindex="1">
Semantic Element
</th>
</tr>
</thead>
<tbody role="rowgroup">
<tr role="row">
<td role="cell" aria-rowindex="11">header</td>
<td role="cell" aria-rowindex="11">h1</td>
</tr>
<tr role="row">
<td role="cell" aria-rowindex="16">header</td>
<td role="cell" aria-rowindex="16">h6</td>
</tr>
<tr role="row">
<td role="cell" aria-rowindex="18">rowgroup</td>
<td role="cell" aria-rowindex="18">thead</td>
</tr>
<tr role="row">
<td role="cell" aria-rowindex="24">term</td>
<td role="cell" aria-rowindex="24">dt</td>
</tr>
</tbody>
</table>
js
let el = document.getElementById("role-heading");
console.log(el.ariaColIndex); // 1
el.ariaColIndex = "2";
console.log(el.ariaColIndex); // 2
Specifications
| Specification |
|---|
| Accessible Rich Internet Applications (WAI-ARIA) # dom-ariamixin-ariacolindex |
Browser compatibility
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