Re: [Proto-Scripty] Re: FInd and iterate over ProcessingInstruction nodes?
That's a very cool idea, certainly do-able with about 2 lines of Ruby
code in my pre-processor! Thanks for the suggestion.
Walter
On Apr 28, 2011, at 5:15 AM, T.J. Crowder wrote:
Walter,
Unfortunately, I think you're out of luck, because I don't think
browsers retain processing instructions in the DOM. (Obviously if you
were dealing with the original XML, that would be different.) At
least, when I tried it, Firefox just completely dropped them and
Chrome converted them into comments (and sadly, the Comment node type
doesn't have any properties, so you can't get at them that way).
Which is too bad, because even without Prototype supporting them, it's
not hard to create a DOM walker that would have found them if they
were there:
* * * *
function walk(instructions, node) {
var child;
switch (node.nodeType) {
case Node.PROCESSING_INSTRUCTION_NODE:
instructions.push(node.data);
break;
case Node.ELEMENT_NODE:
for (child = node.firstChild; child; child =
child.nextSibling) {
walk(instructions, child);
}
break;
}
return instructions;
}
var instructions = walk([], document.documentElement);
* * * *
But again, that doesn't work, because the nodes just aren't there as
far as I can tell.
There is an element that you can include /nearly/ anywhere, though:
`script`. And in fact, the HTML5 specification even says[1] that
`script` ... allows authors to include dynamic script AND DATA blocks
in their documents. (My emphasis.)
So you might have your pre-processor convert them into `script`
elements, perhaps of type x-application/procinst, e.g.:
body
?pb Edition: current; Page: xxiii?
h1Now This Is Interesting/h1
pInteresting stuff here/p
?pb Edition: current; Page: xxiv?
h1Even More Interesting/h1
becomes
body
script type='x-application/procinst'pb Edition: current; Page:
xxiii/script
h1Now This Is Interesting/h1
pInteresting stuff here/p
script type='x-application/procinst'pb Edition: current; Page:
xxiv/script
h1Even More Interesting/h1
A quick test (http://jsbin.com/ijolu3) indicates that even IE6 knows
to leave `script` contents of an unknown type alone. I tried that on
current versions of Chrome, Firefox, and Safari, as well as IE6, IE7,
and IE9.
It isn't, strictly speaking *valid* because (for instance) you can't
have a `script` element that's an immediate child of a `ul`. But
firstly, that seems like an error in the spec (why not?), and
secondly, the browsers don't seem to mind.
[1] http://www.w3.org/TR/html5/scripting-1.html#script
FWIW,
--
T.J. Crowder
Independent Software Engineer
tj / crowder software / com
www / crowder software / com
On Apr 28, 3:26 am, Walter Davis wa...@wdstudio.com wrote:
That would work if I was grepping through the source, but I'm trying
to pick this thing out of the DOM so I can hook onto it and add a
visible element near it. I can't seem to find a way to access it
there. Thanks for the suggestion, though.
Walter
On Apr 27, 2011, at 8:32 PM, kstubs wrote:
Probably your best best is REGEX
result = subject.match(/\?[a-zA-Z0-9 :;]*\?/img);
result is an array of matches. So, result[0], result[1], and so
on...
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Re: [Proto-Scripty] Re: FInd and iterate over ProcessingInstruction nodes?
Aha, I just read further, and it appears this won't work for what I'm doing, which is in part creating a valid XHTML branch to build epub documents, PrinceXML PDF documents, etc. from. I could certainly strip these out when building those iterations, but I guess I'll keep looking and see if I can figure out another way to go. Walter On Apr 28, 2011, at 5:15 AM, T.J. Crowder wrote: It isn't, strictly speaking *valid* because (for instance) you can't have a `script` element that's an immediate child of a `ul`. But firstly, that seems like an error in the spec (why not?), and secondly, the browsers don't seem to mind. -- You received this message because you are subscribed to the Google Groups Prototype script.aculo.us group. To post to this group, send email to prototype-scriptaculous@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
[Proto-Scripty] Re: FInd and iterate over ProcessingInstruction nodes?
Hi, Yeah, I don't think there's any valid way to do this in XHTML without a lot of work. You could turn them into namespaced non-HTML XML elements as discussed here[1], but metadata content isn't valid everywhere, so that wouldn't be *quite* valid. (Might be valid *enough*.) My backup suggestion was to have your pre-processor attach the content of the processing instructions as data-xyz attributes, either on their parent element or the element that follows them, whichever makes more sense for what you're doing. Not ideal at all, as they'll get relocated if they appear inside a large block of text, but... [1] http://www.w3.org/TR/html5/content-models.html#metadata-content Good luck, -- T.J. :-) On Apr 28, 2:15 pm, Walter Davis wa...@wdstudio.com wrote: Aha, I just read further, and it appears this won't work for what I'm doing, which is in part creating a valid XHTML branch to build epub documents, PrinceXML PDF documents, etc. from. I could certainly strip these out when building those iterations, but I guess I'll keep looking and see if I can figure out another way to go. Walter On Apr 28, 2011, at 5:15 AM, T.J. Crowder wrote: It isn't, strictly speaking *valid* because (for instance) you can't have a `script` element that's an immediate child of a `ul`. But firstly, that seems like an error in the spec (why not?), and secondly, the browsers don't seem to mind. -- You received this message because you are subscribed to the Google Groups Prototype script.aculo.us group. To post to this group, send email to prototype-scriptaculous@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
Re: [Proto-Scripty] Re: FInd and iterate over ProcessingInstruction nodes?
That would work if I was grepping through the source, but I'm trying to pick this thing out of the DOM so I can hook onto it and add a visible element near it. I can't seem to find a way to access it there. Thanks for the suggestion, though. Walter On Apr 27, 2011, at 8:32 PM, kstubs wrote: Probably your best best is REGEX result = subject.match(/\?[a-zA-Z0-9 :;]*\?/img); result is an array of matches. So, result[0], result[1], and so on... -- You received this message because you are subscribed to the Google Groups Prototype script.aculo.us group. To post to this group, send email to prototype-scriptaculous@googlegroups.com . To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en . -- You received this message because you are subscribed to the Google Groups Prototype script.aculo.us group. To post to this group, send email to prototype-scriptaculous@googlegroups.com. To unsubscribe from this group, send email to prototype-scriptaculous+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/prototype-scriptaculous?hl=en.
