sort data date unstable test 1500 rows all sortable false test sortFixed random-10x10 random-10x2k

selectVisible selectAllVisible

sortIndicator: h v sortOnInit sortAsc sortBlankValueBottom

sortField: string_number name number number2 date number_string string_null sortable_false render

setSortColumn("index") removeSortColumn() exportData()

preventDefault onClick preventDefault onSort