Element: ariaColCount 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 ariaColCount property of the Element interface reflects the value of the aria-colcount attribute, which defines the number of columns in a table, grid, or treegrid.
Value
A string.
Examples
In this example the aria-colcount attribute on the element with an ID of semantic-table is set to "2". Using ariaColCount we update the value to "3".
html
<table
id="semantic-table"
role="table"
aria-label="Semantic Elements"
aria-describedby="semantic_elements_table_desc"
aria-rowcount="100"
aria-colcount="2">
<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" aria-sort="none" aria-rowindex="1">ARIA Role</th>
<th role="columnheader" 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("semantic-table");
console.log(el.ariaColCount); // 2
el.ariaColCount = "3";
console.log(el.ariaColCount); // 3
Specifications
| Specification |
|---|
| Accessible Rich Internet Applications (WAI-ARIA) # dom-ariamixin-ariacolcount |
Browser compatibility
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