headerCell
headerCell is a term used in data tables and grids to denote a cell in the header row that labels a column of data. It appears in the topmost row of a table or in the header section of a grid, and its primary role is to convey the meaning of the column to users and assistive technologies. In HTML, the header cell is typically implemented with the th element inside the thead element. The th element can carry scope attributes such as scope="col" to indicate that the header applies to a column, and it can include aria attributes, such as aria-sort, to reflect the current sort state.
In user interface libraries, headerCell objects or components render the column labels and often provide interactivity,
Accessibility considerations are central for header cells. Proper use of semantic elements and ARIA attributes helps
See also: th element, table header, column header, data grid, accessibility in tables.