I have a HTML page consisting of several tables at the top level of the DOM,
interpersed with other HTML tags. For example:
HTML
BODY
-- SCRIPT
-- SCRIPT
-- #comment
-- SCRIPT
-- A
-- TABLE
-- TABLE
-- TABLE
-- NOSCRIPT
-- #comment
-- BR
-- TABLE
-- #comment
-- #comment
What's the best way of accessing the last table at the top level (i.e. the
last table in the immediate children of HTMLdocument.bo dy)? I'm currently
using the technique shown by the following code snippet, but is there an
easier way?
(ByVal mDoc As mshtml.HTMLDocu ment)
Dim mElems As mshtml.IHTMLEle mentCollection
Dim mElem As mshtml.IHTMLEle ment
Dim mTable As mshtml.IHTMLTab le
Dim i As Integer
mElems = mDoc.body.child ren
For i = mElems.length - 1 To 0 Step -1
mElem = mElems.item(i)
If TypeOf mElem Is mshtml.HTMLTabl eClass Then
mTable = mElem 'the required table - break out here
End If
Next
Any help or info is much appreciated. 3 4273
Hello John, I have a HTML page consisting of several tables at the top level of the DOM, interpersed with other HTML tags. For example:
HTML BODY What's the best way of accessing the last table at the top level (i.e. the last table in the immediate children of HTMLdocument.bo dy)? I'm currently using the technique shown by the following code snippet, but is there an easier way?
(ByVal mDoc As mshtml.HTMLDocu ment)
Dim mElems As mshtml.IHTMLEle mentCollection Dim mElem As mshtml.IHTMLEle ment Dim mTable As mshtml.IHTMLTab le Dim i As Integer mElems = mDoc.body.child ren For i = mElems.length - 1 To 0 Step -1 mElem = mElems.item(i) If TypeOf mElem Is mshtml.HTMLTabl eClass Then mTable = mElem 'the required table - break out here End If Next Any help or info is much appreciated.
As far as i'm aware, you're doing alright. You could filter down the list of items you have to go through by requesting all the tables, but this does bring in all the nested tables as well - instead of checking if it's a table, you check the parent to see if it matches the body. Depending on the situation (ie - not many tables in the document), this might end up needing to iterate less often, but there's really no garantees.
Dim mBody as mshtml.IHTMLEle ment = mDoc.body
mElems = mDoc.getElement sByTagName("TAB LE")
for i = mElems.length - 1 to 0 Step -1
mElem = mElems.item(i)
if mElem.parentEle ment.sourceInde x = mBody.sourceInd ex then
mTable = mElem
endif
next
--
Geoff Appleby http://www.dotnetjunkies.com/weblog/fredd/
"Geoff Appleby" <ge***********@ nospam.gmail.co m> wrote in message
news:%2******** ********@TK2MSF TNGP12.phx.gbl. .. Hello John,
I have a HTML page consisting of several tables at the top level of the DOM, interpersed with other HTML tags. For example:
HTML BODY What's the best way of accessing the last table at the top level (i.e. the last table in the immediate children of HTMLdocument.bo dy)? I'm currently using the technique shown by the following code snippet, but is there an easier way?
(ByVal mDoc As mshtml.HTMLDocu ment)
Dim mElems As mshtml.IHTMLEle mentCollection Dim mElem As mshtml.IHTMLEle ment Dim mTable As mshtml.IHTMLTab le Dim i As Integer mElems = mDoc.body.child ren For i = mElems.length - 1 To 0 Step -1 mElem = mElems.item(i) If TypeOf mElem Is mshtml.HTMLTabl eClass Then mTable = mElem 'the required table - break out here End If Next Any help or info is much appreciated.
As far as i'm aware, you're doing alright. You could filter down the list of items you have to go through by requesting all the tables, but this does bring in all the nested tables as well - instead of checking if it's a table, you check the parent to see if it matches the body. Depending on the situation (ie - not many tables in the document), this might end up needing to iterate less often, but there's really no garantees.
Dim mBody as mshtml.IHTMLEle ment = mDoc.body mElems = mDoc.getElement sByTagName("TAB LE") for i = mElems.length - 1 to 0 Step -1 mElem = mElems.item(i) if mElem.parentEle ment.sourceInde x = mBody.sourceInd ex then mTable = mElem endif next
-- Geoff Appleby http://www.dotnetjunkies.com/weblog/fredd/
Thanks Geoff. Yes there are a number of nested tables, I see what you mean.
I've never used the sourceIndex before to match up the element with its
parent, so thanks for showing that too.
Hello John, Thanks Geoff. Yes there are a number of nested tables, I see what you mean. I've never used the sourceIndex before to match up the element with its parent, so thanks for showing that too.
No worries.
Something to be aware of: the sourceindex is an unreliable dynamic value.
By that, what i mean is, the sourceindex is garanteed to be unique, but you can't rely on it being the exact same value whenever the page is reloaded. I any dynamic changes are made to the page (adding or removing elements, for example) then the sourceindexes will go out of whack.
End result: use the sourceindex, but only while the dom has not been modified. Hope that makes sense :)
--
Geoff Appleby http://www.dotnetjunkies.com/weblog/fredd/ This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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