=================
on_detail_changed
=================

on_detail_changed(item, detail)

**domain**: client 

**language**: javascript

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

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

Occurs after changes to detail record has been posted. It uses the clearTimeout
and setTimeout Javascript functions so if records have been changed in a cicle it
is triggered only when last record change occurs.

The ``item`` parameter is an item that triggered the event.
The ``detail`` parameter is a detail that has been changed.

Write an on_detail_changed event handler to calculate, by using 
:doc:`calc_summary <m_calc_summary>` method,
sums for fields of a detail and save these values in fields of its master.

Example
=======

.. code-block:: js

    function on_detail_changed(item, detail) {
        var fields;
        if (detail.item_name === 'invoice_table') {
            fields = [
                {"total": "total"}, 
                {"tax": "tax"}, 
                {"subtotal": "amount"}
            ];  
            item.calc_summary(detail, fields);
        }
    }

See also
========

:doc:`Details </programming/data/details>`
:doc:`calc_summary <m_calc_summary>`