ElementInternals: ariaColCount property

The ariaColCount property of the ElementInternals interface reflects the value of the aria-colcount attribute, which defines the number of columns in a table, grid, or treegrid.

Note: Setting aria attributes on ElementInternals allows default semantics to be defined on a custom element. These may be overwritten by author-defined attributes, but ensure that default semantics are retained should the author delete those attributes, or fail to add them at all. For more information see the Accessibility Object Model explainer.


A string.


In this example the aria-colcount attribute is set to "3".

this.internals_.ariaColCount = "3";


Accessible Rich Internet Applications (WAI-ARIA)
# dom-ariamixin-ariacolcount

Browser compatibility

BCD tables only load in the browser