format options for numeric data

Questions › format options for numeric data

With this definition:
$col["formatter"] = "number";
$col["formatoptions"] = array("thousandsSeparator" => ",",
"decimalSeparator" => ".",
"decimalPlaces" => '2');
you can view:
999,999,999.99

With this definition (italian country):
$col["formatter"] = "number";
$col["formatoptions"] = array("thousandsSeparator" => ".",
"decimalSeparator" => ",",
"decimalPlaces" => '2');
you can view:
999.999.999..99
Thanks in advance for suggestions