ServiceNow Client Side Date Handling

servicenow_client_side_date_handling.js

function onChange(control, oldValue, newValue, isLoading) {
	if (isLoading || newValue == '') {
		return;
	}

	var today = new Date();
	today.setUTCHours(0, 0, 0, 0);

	//
	// ServiceNow Date -> JavaScript Date
	//
	
	// Note: Assuming 'my_field' is a Date Field!
	// For Date Time fields, use g_user_date_time_format instead!
	var timestamp = getDateFromFormat(g_form.getValue('my_field'), g_user_date_format);
	var date = new Date(timestamp);
	if (date < today) {
		alert('Date cannot be in the past!');
	}
	
	//
	// JavaScript Date -> ServiceNow Date
	//
	var snDate = formatDate(new Date(timestamp), g_user_date_format);
	g_form.setValue('my_field', snDate);
}