axe-core/lib/checks/tables/has-th.js

Accessibility engine for automated Web UI testing

var row, cell,
	badCells = [];

for (var rowIndex = 0, rowLength = node.rows.length; rowIndex < rowLength; rowIndex++) {
	row = node.rows[rowIndex];
	for (var cellIndex = 0, cellLength = row.cells.length; cellIndex < cellLength; cellIndex++) {
		cell = row.cells[cellIndex];
		if (cell.nodeName.toUpperCase() === 'TH' ||
					['rowheader', 'columnheader'].indexOf(cell.getAttribute('role')) !== -1)  {
			badCells.push(cell);
		}
	}
}

if (badCells.length) {
	this.relatedNodes(badCells);
	return true;
}

return false;