Mozilla XUL Element and Script Reference

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Member

Used within a rule's conditions element to match elements that are containers or are contained within another element. Both the container and child attributes may use variables.

Properties and Methods:

Properties and Methods inherited from XUL Element

child

A variable reference to a node that is expected to be a child of the element that is referred to by the container element.

container

A variable reference to a node that is expected to be a container. If the variable is the same as the uri attribute on the content element, the resource must be a container element in order to match.