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DOM Binder Overview

The purpose of the DOM Binder is to relax the coupling between a component and its markup. Whilst the Fluid framework is built on jQuery, and uses that framework's selector engine throughout to perform queries on the DOM, the extra level of indirection provided by the DOM Binder allows a complete separation of concerns. Fluid components are parameterised by a set of named selectors, managed by the DOM Binder instance attached to each top-level component. In this way, explicit selectors never appear in component code - leaving the components free of any baked dependence on markup structure.

There are other benefits to having DOM searches (via jQuery) managed in a central location - component authors can get access to fine-grained control over caching and lifetime of search results, which might otherwise become expensive if performed repeatedly - along with its basic locate() method, each DOM binder has a fastLocate() method which will not perform a DOM search if there is a cached result.

Components access elements in the DOM through unique selector names. The component defines default values for the selectors, but implementors are free to override the defaults if they need to change the structure of the markup.

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