for (var val of {"a": 1, "b": 2, "c": 3}) {
	rows[val].expand();
}
/**************************************************/
for(var val of {"a":1,"b":2,"c":3})rows[val].expand();
/**************************************************/
for ( var val of {"a": 1, "b": 2, "c": 3} )
{
	rows[val].expand(  );
}