[whatwg] Parsing the string <html>
ian at hixie.ch
Fri Aug 2 19:20:41 PDT 2013
> On Fri, 2 Aug 2013, Mohammad Al Houssami (Alumni) wrote:
> > When parsing the string <html> the document should supposedly have an
> > html root with head and body children. ( This is what live dom viewer
> > shows at least) but according to the specs( if im not wrong) we only
> > get the document with the html element and the stack of open elements
> > will have html head and body elements in it.
> The "<html>" start tag token causes you to jump from the "initial"
> insertion mode to the "before html" insertion mode, and then the <html>
> element is created and you jump to "before head".
> You then hit the "end of file" token, and that causes the <head> element
> to be generated, and switches you to "in head", where <head> is popped
> and you switch to "after head", where you insert a <body> element and
> switch to "in body", at which point you stop parsing.
On Sat, 3 Aug 2013, Mohammad Al Houssami (Alumni) wrote:
> That is totally correct. But are the head and body elements added to the
> document? So basically when we stop parsing the document should only
> have the html element is that correct?
On Fri, 2 Aug 2013, Tab Atkins Jr. wrote:
> No, the spec clearly says "Insert an HTML element..." for those as you
> trace through the parsing.
As Tab says, when the elements are generated they are also immediately
inserted into the document. For example, where it says:
# Insert an HTML element for a "body" start tag token with no attributes.
...in the "after head" mode, "Insert an HTML element" is a hyperlink to
the definition of that algorithm earlier in the spec, which says:
# 1. Let the adjusted insertion location be the appropriate place for
# inserting a node.
...which itself basically just boils down to "inside current node, after
its last child (if any)", followed by:
# 2. Create an element for the token in the HTML namespace, with the
# intended parent being the element in which the adjusted insertion
# location finds itself.
...followed by (skipping bits irrelevant to this case):
# 4. If it is possible to insert an element at the adjusted insertion
# location, then insert the newly created element at the adjusted
# insertion location.
...which appends the <body> element to the <html> element (after the
<head> element, which goes through the same process earlier). When you
append a node to another, they end up in the same Document.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
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