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[Shadow]: Declarative Shadow DOM (bugzilla: 28441) #71
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This needs a clear proposal. |
This was referenced Nov 15, 2016
How would such a proposal look like? |
The set of changes needed to the HTML parser would be a start. |
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Title: [Shadow]: Declarative Shadow DOM (bugzilla: 28441)
Migrated from: https://www.w3.org/Bugs/Public/show_bug.cgi?id=28441
comment: 0
comment_url: https://www.w3.org/Bugs/Public/show_bug.cgi?id=28441#c0
Dimitri Glazkov wrote on 2015-04-08 15:49:50 +0000.
From: https://lists.w3.org/Archives/Public/public-webapps/2015AprJun/0052.html
"Mostly for performance it would be nice if
the composed tree could be serialized and cached. That way first
render only requires HTML and CSS with JavaScript kicking in at the
end. We reasoned it might not be too hard to add something like
given our experience with . The only difference
would be that itself would also not be appended to the
tree and that the DocumentFragment nee ShadowRoot is associated with
"its parent"."
comment: 1
comment_url: https://www.w3.org/Bugs/Public/show_bug.cgi?id=28441#c1
Dimitri Glazkov wrote on 2015-04-08 16:21:10 +0000.
Here's a fairly simple implementation of this using custom elements and templates: http://jsbin.com/xuheb/4/edit
I think this is a great example of:
a) using type extensions to avoid more hard-coded parsing behaviors
b) extensible web in action -- no need to wait on spec/browsers to ship this
c) custom element upgrades being helpful in avoiding additional tree traversals and deferring running of the script until whenever you actually need the tree.
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