Fixed #19597 - Added some notes on jQuery in admin.

jQuery

~~~~~~

Django admin Javascript makes use of the `jQuery`_ library. To avoid

conflicts with user-supplied scripts or libraries, Django's jQuery is

namespaced as ``django.jQuery``. If you want to use jQuery in your own admin

JavaScript without including a second copy, you can use the ``django.jQuery``

object on changelist and add/edit views.

If you require the jQuery library to be in the global namespace, for example

when using third-party jQuery plugins, or need a newer version of jQuery, you

will have to include your own copy of jQuery.

Django admin Javascript makes use of the `jQuery`_ library.

To avoid conflicts with user-supplied scripts or libraries, Django's jQuery

(version 1.4.2) is namespaced as ``django.jQuery``. If you want to use jQuery

in your own admin JavaScript without including a second copy, you can use the

``django.jQuery`` object on changelist and add/edit views.

The :class:`ModelAdmin` class requires jQuery by default, so there is no need

to add jQuery to your ``ModelAdmin``'s list of media resources unless you have

a specifc need. For example, if you require the jQuery library to be in the

global namespace (for example when using third-party jQuery plugins) or if you

need a newer version of jQuery, you will have to include your own copy.

Django provides both uncompressed and 'minified' versions of jQuery, as

``jquery.js`` and ``jquery.min.js`` respectively.