======
rec_no
======

.. js:attribute:: rec_no

**domain**: client 

**language**: javascript

**class** :doc:`Item class </refs/client/item_api>`

Description
===========

Examine the ``rec_no`` property to determine the record number of the current 
record in the item dataset. 
``rec_no`` can be set to a specific record number to position the cursor on that 
record.

Example
=======

.. code-block:: js

    function calculate(item) {
        var subtotal,
            tax,
            total,
            rec;
        if (!item.calculating) {
            item.calculating = true;
            try {
                subtotal = 0;
                tax = 0;
                total = 0;
                item.invoice_table.disable_controls();
                rec = item.invoice_table.rec_no;
                try {
                    item.invoice_table.each(function(d) {
                        subtotal += d.amount.value;
                        tax += d.tax.value;
                        total += d.total.value;
                    });
                }
                finally {
                    item.invoice_table.rec_no = rec;
                    item.invoice_table.enable_controls();
                }
                item.subtotal.value = subtotal;
                item.tax.value = tax;
                item.total.value = total;
            }
            finally {
                item.calculating = false;
            }
        }
    }

See also
========

:doc:`Dataset </programming/data/dataset>`

:doc:`Navigating datasets </programming/data/navigating_datasets>`