What is the method for programming a flexible NetSuite date interval that starts on the first day of a month four months in the past and finishes on the final day of the previous month?

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To program a flexible NetSuite date interval that starts on the first day of a month four months in the past and finishes on the final day of the previous month, you can follow these steps:

1. Get the current date using the JavaScript Date object:

var today = new Date();

1. Subtract 4 months from the current date using the setMonth() method:

var fromDate = new Date();
fromDate.setMonth(today.getMonth() - 4);

1. Set the day of the fromDate to the first day of the month:

fromDate.setDate(1);

1. Set the toDate to the last day of the previous month:

var toDate = new Date();
toDate.setDate(0);

1. Format the fromDate and toDate using the NetSuite Date API:

var nsFromDate = nlapiDateToString(fromDate);
var nsToDate = nlapiDateToString(toDate);

1. Use the nsFromDate and nsToDate variables to filter your NetSuite records:

var filters = [];
filters.push(new nlobjSearchFilter('datecreated', null, 'within', nsFromDate, nsToDate));

This will give you a flexible date interval that starts on the first day of a month four months in the past and finishes on the final day of the previous month.