Element.ariaColIndex

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".

<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>
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

BCD tables only load in the browser

See also