=========
read_only
=========

.. js:attribute:: read_only

**domain**: client 

**language**: javascript

**class** :doc:`Field class </refs/client/field_api>`


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

Determines whether the field can be modified in data-aware controls.

Set **read_only** to **true** to prevent a field from being modified in 
data-aware controls.

See also
========

:doc:`Fields </programming/data/fields>`

:doc:`required <at_required>`



