N/format/i18n Module
format.NumberFormatter
Object Description: The object that formats number to string.
Supported Script Types: Client and server-side scripts For more information, see SuiteScript 2.0 Script Types.
Module: N/format/i18n Module
Methods and Properties: N/format/i18n Module Members
Since: 2019.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=format.NumberFormatter

// Code Example 1

// Add additional code

//...

require(['N/format/i18n'],

    function(format) {

        var numFormatter1 = format.getNumberFormatter(); // no parameter given -> default number formatter object returned

        var numFormatter2 = format.getNumberFormatter({

                groupSeparator: " ",

            decimalSeparator: ",",

            precision: 2,

            negativeNumberFormat: format.NegativeNumberFormat.MINUS});

        // all parameters defined



        // here number formatters can be used

        log.debug(numFormatter1.format({number: 12.53}));

        log.debug(numFormatter2.format({number: 12845.22}));

});...

// Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_1558026406.html