* Join the "Google Group":http://groups.google.com/group/jquery-entwine and let us know what you think, or what other features you'd like to see
h2. Name change
jQuery Entwine used to be called jQuery Concrete. The name was changed to avoid confusion with another product. The concrete function remains as an alias, but all new code should use entwine
Like other functions, only the most specific definition will be used. However, because property changes are not atomic, this may not work as you
expect.
h2. Namespaces
To avoid name clashes, to allow multiple bindings to the same event, and to generally seperate a set of functions from other code you can use namespaces
Clicking on a div will change the background **and** foreground color.
This is particularly important when writing reusable code, since otherwise you can't know before hand whether your event handler will be called or not
Although a namespace can be any string, best practise is to name them with dotted-identifier notation.
h4. Namespaces and scope (or What the hell's up with that ugly function closure)
Inside a namespace definition, functions remember the namespace they are in, and calls to other functions will be looked up inside that namespace first.
Where they don't exist, they will be looked up in the base namespace
Then doing $('div').bar(); will _not_ display b. Even though the span rule could never match a div, because baz is defined for some rule in the foo namespace, the base namespace will never be checked
In some situations (such as the last example) you may want to force using the base namespace. In this case you can call entwine with the first argument being the base namespace code '.'. For example, if the first definition in the previous example was
Sometimes a block outside of a namespace will need to refer to that namespace repeatedly. By passing a function to the entwine function, you can change the looked-up namespace
Specs are written using the awesome "JSpec":http://github.com/visionmedia/jspec library. You can run them in two ways
h4. Ad-hoc
Open the file `spec/spec.html` in any modern browser
h4. Continuous testing
JSpec has a command line client which can be used for continuous testing. Make sure ruby is installed and enabled the "Gemcutter":http://gemcutter.org/ gem hosting service, like so:
<pre><code>
sudo gem install gemcutter
sudo gem tumble
</code></pre>
Then install the jspec binary:
<pre><code>
sudo gem install jspec
</code></pre>
The JSpec command line tool should now be installed. This command will re-run the specs whenever you edit a file:
Copyright (C) 2009 Hamish Friedlander (hamish@silverstripe.com) and SilverStripe Limited (www.silverstripe.com). All rights reserved.
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