User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20051227 Firefox/1.6a1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20051227 Firefox/1.6a1 Two issues... 1. context node, root, parent etc in filter :- Ref: 11.2.4 XML Filtering Predicate Operator, ECMA-357 2nd Edition / December 2005 It would have been nice if we had simple accessors to the current node, root node (of original document), parent node etc in the filter clause. Right now a web developer can do this with little work around i am attaching a demo see attachment e4x_contextnode.htm 2. root() node, ancestors() list. We have children(), child(), descendants() for a node (Ref: 11.2.3 XML Descendant Accessor ), But we dont have a function for root() of the original XML object also no method for to get all in the chain above a node Here is an example for the use of context node, root, parent etc in filter c=<company president="1"> <dept boss="1" n="sales"> <emp id="1" n="evan" /> <emp id="2" n="tom" /> <emp id="3" n="matt" /> <emp id="12" n="susan" /> </dept> <dept boss="11" n="support"> <emp id="4" n="dick" /> <emp id="5" n="earl" /> <emp id="11" n="barry" /> </dept> <dept boss="6" n="rnd"> <emp id="6" n="eric" /> <emp id="7" n="bob" /> </dept> <dept boss="8" n="qa"> <emp id="9" n="tim" /> <emp id="8" n="biju" /> <emp id="10" n="salim" /> </dept> </company> // list dept heads c.dept.emp.(@id == @id.parent().parent().@boss); // better if we had //c.dept.emp.(@id == @_node.parent().@boss); //c.dept.emp.(@id == @_parent.@boss); // get name of the company president c.dept.emp.(@id == @id.parent().parent().parent().@president).@n; // better if we had //c.dept.emp.(@id == @_root.@boss); Reproducible: Always Steps to Reproduce: see demo on attachment e4x_contextnode.htm

c.dept.emp.(@id == @id.parent().parent().@boss); // better would have been //c.dept.emp.(@id == @_node.parent().@boss); //c.dept.emp.(@id == @_parent.@boss); // or simply //c.dept.emp.(@id == @.parent().@boss); //c.dept.emp.(@id == @..@boss); //like dir . and .. c.dept.emp.(@id == @id.parent().parent().parent().@president).@n; // better would have been //c.dept.emp.(@id == @_root.@boss); // or simply //c.dept.emp.(@id == @/.@boss); //c.dept.emp.(@id == @/@boss); //like dir /

E4X will be removed again from Spidermonkey (bug 788293)