[Bug 26396] New: innerHTML depends on node document; doesn't look at element context

[email protected] Mon, 21 Jul 2014 10:03:47 +0000
Newsgroups	gmane.comp.web.dom.general
Message-ID	<[email protected]/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=26396

            Bug ID: 26396
           Summary: innerHTML depends on node document; doesn't look at
                    element context
           Product: WHATWG
           Version: unspecified
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DOM Parsing and Serialization
          Assignee: [email protected]
          Reporter: [email protected]
        QA Contact: [email protected]
                CC: [email protected], [email protected],
                    [email protected]

http://domparsing.spec.whatwg.org/#innerhtml

[[
On getting, if the context object's node document is an HTML document, then the
attribute must return the result of running the HTML fragment serialization
algorithm on the context object; otherwise, the context object's node document
is an XML document,
]]

Currently innerHMTML just looks at the node document. This is maybe not enough.
The elements context itself seems to be interesting as well to set the
namespace of elements.

<div><svg id="svg"></svg></div>
<script>
document.getElementById('svg').innerHTML = '<g><rect width="100"
height="100"/></g>';
</script>

doesn't work.

while

<div><svg id="svg"></svg></div>
<script>
document.getElementById('svg').innerHTML = '<svg><g><rect width="100"
height="100"/></g></svg>';
</script>

works in most browsers. (In all, if it gets called on <div>.)

It gets of course more complicated when innerHTML is called on an element
within <foreignObject>:

    <foreignObject width="100" height="50"
                   requiredExtensions="http://www.w3.org/1999/xhtml">
      <!-- XHTML content goes here -->
      <body xmlns="http://www.w3.org/1999/xhtml">
        <p>Here is a paragraph that requires word wrap</p>
      </body>
    </foreignObject>

Here the node document is probably not the SVG root document.

Also, for standalone SVG files, it would be great if authors don't need to
specify the SVG namespace on elements in the "value" string. With the text
above, it seems to be necessary. At least it is not clear to me how the output
would be an SVG element.

Especially for HTML documents with SVG content, this issue has been brought up
to the SVG WG many times.

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