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Methods for invoking selectors are missing way how to pass namespace prefix declarations

From: Jirka Kosek <jirka@kosek.cz>
Date: Mon, 17 Mar 2014 11:18:50 +0100
Message-ID: <5326CC0A.8060708@kosek.cz>
To: www-dom@w3.org
Hi,

if I haven't missed anything there is serious omission in methods
related to selectors -- query(), queryAll(), querySelector() and
querySelectorAll().

Selectors specs (http://dev.w3.org/csswg/selectors4/#namespaces) says
that language that uses selectors should define mechanism by which
namespace prefixes are declared. This is important for working with
elements in non-HTML namespace. For example using selectors you can
easily select all circles in SVG document by using "svg|circle", given
"svg" prefix is correctly declared.

Currently DOM4 doesn't offer mechanism for declaring namespace prefixes
which can be used in selector strings passed to API. All four methods
(query(), queryAll(), querySelector() and querySelectorAll()) should
provide second signature with optional object, which will hold mapping
between namespaces and prefixes.

What is needed is something similar to the following methods/classes
available in another programming environments:

http://www.w3.org/TR/DOM-Level-3-XPath/xpath.html#XPathNSResolver

http://www.php.net/manual/en/domxpath.registernamespace.php

So it would be possible to declare prefixes before issuing query, for
example like:

document.querySelectorAll("svg|circle", { svg:
"http://www.w3.org/2000/svg"} )


				Jirka


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Received on Monday, 17 March 2014 10:19:15 UTC

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