Xpath and DOM
ldodds at ingenta.com
Tue Dec 14 13:31:58 GMT 1999
At present the DOM spec only allows one to traverse the
tree 'manually' using getChild, etc. Or jump into the
tree at some point using getElementsByTagName.
Theres nothing in there to allow me to do getElementsByExpression
(accepting an XPath search expression), or similarly pull out
sections of the DOM tree using XPath expressions.
I've written basic utilities to do this, as have others I'm sure
(XSLT engines must use something similar), but I'm curious as to when, or
even whether, this type of feature is going to be added to the
DOM API itself.
It would seem to be pretty useful. In the applications I've built
so far, I've not wanted to traverse or walk the tree, just pick
out bits of it (and sure I could use SAX but I want the tree
in memory because I'm manipulating it multiple times).
Unless I'm asking the wrong question - is there a tool that will
search a DOM tree for me, assuming I supply it with an XPath
"Never Do With More, What Can Be Achieved With Less"
---William of Occam
Leigh Dodds Eml: ldodds at ingenta.com
ingenta ltd Tel: +44 1225 826619
BUCS Building, University of Bath Fax: +44 1225 826283
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