How to Format a JavaScript Date for NetSuite Date/Time Fields in SuiteScript?

To correctly format a JavaScript Date object for a NetSuite Date/Time field, the method depends on the SuiteScript version being utilized.

For SuiteScript 1.0 environments:

Developers should use the nlapiDateToString function, specifying the datetimetz format. This function converts the JavaScript Date object into a string format that NetSuite's Date/Time fields can properly interpret, including time zone information.

javascript
nlapiDateToString(dateObject, 'datetimetz')

For modern SuiteScript 2.x environments (recommended approach):

The N/format module provides robust capabilities for date and time formatting. The format.format() method should be used, specifying format.Type.DATETIMETZ for fields requiring date, time, and time zone.

javascript
require(['N/format'], function(format) {
    var myDate = new Date(); // Your JavaScript Date object
    var formattedDateString = format.format({
        value: myDate,
        type: format.Type.DATETIMETZ
    });
    // Use formattedDateString to set the field value, e.g., record.setValue({fieldId: 'yourfield', value: formattedDateString});
});

Alternatively, for many record.setValue() operations in SuiteScript 2.x, a native JavaScript Date object can often be passed directly to the field. NetSuite will then handle the conversion based on the field's type and user's time zone settings.

javascript
record.setValue({
    fieldId: 'custrecord_yourdatetimefield',
    value: new Date() // Pass native JavaScript Date object
});

This ensures that the date and time, along with the associated time zone, are accurately stored in NetSuite's Date/Time fields, preventing data discrepancies.