libjs-jquery-metadata - 12-1.1 main

Sets the type of metadata to use. Metadata is encoded in JSON, and each
property in the JSON will become a property of the element itself.
.
There are three supported types of metadata storage:
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attr: Inside an attribute. The name parameter indicates *which* attribute.
.
class: Inside the class attribute, wrapped in curly braces: { }
.
elem: Inside a child element (e.g. a script tag). The name parameter
indicates *which* element.
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The metadata for an element is loaded the first time the element is accessed
via jQuery.
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As a result, you can define the metadata type, use $(expr) to load the metadata
into the elements matched by expr, then redefine the metadata type and run
another $(expr) for other elements.