Join MDN and developers like you at Mozilla's View Source conference, 12-14 September in Berlin, Germany. Learn more at


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

Document Tags and Contributors

 Contributors to this page: Sheppy, trevorh, Marsf, Ptak82, Dria
 Last updated by: Sheppy,