HTML Multiple Heads
NOTE: I am in no way advocating multiple heads within a page
I\'m using Apache Tiles and I have a few tiles that include their own heads
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Well, in modern Chrome, it's at least possible to know what happens. Chrome uses the HTML5 parser algorithm which describes exactly how invalid mark-up is processed. The gory details are at http://dev.w3.org/html5/spec/tree-construction.html#parsing-main-inbody
What happens in your example is that the first
inis discarded. Then thetag is processed, which is a start tag, not a self-closing tag, so everything that follows, including everything that looks like a tag, becomes a text child of the script element. Nothing is displayed and no script is run. Ifis replaced by, and ditto for, the head start and end tags are silent discarded, and the script elements are not moved. "Tile One Content Title Two Content" is displayed and the scripts are run. The DTD makes no difference at all.IE is somewhat trickier to know, as before IE10, it doesn't use the HTML5 parser algorithm and therefore it's exact behaviour is a mystery. However, a cursory experiment appears to show that it has the same behaviour as described above.
Although some legacy browsers move elements that can only appear in the head - such as
- into the head, other browsers do not, and no such behaviour can be relied upon.All in all, best steer well clear of such constructs.
I don't know about practices for Apache Tiles.
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