How to access a JS changed attribute on the server side?

hi all;
if i change an attribute on a custom component via java script on the client side.
how can i access the changed value on the server side?
in what method will i have the access to this changed field?
thanks in advance.

You can hardcode the ID of the component in the backingbean (or some propertiesfile) and use ViewRoot.findComponent(componentId). Using the binding is (much!) more elegant anyway.

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