From: Geoff McLane <ubuntu@geoffair.info>
To: Karl Dahlke <eklhad@comcast.net>
Cc: Edbrowse-dev@lists.the-brannons.com
Subject: Re: [Edbrowse-dev] nasa / prepending "on" to events
Date: Fri, 26 Jan 2018 20:13:00 +0100 [thread overview]
Message-ID: <CA+PgotKfzWgTF1eCPwgr8DS6UQTXbUOh9hDQazfmBs6so3M=sw@mail.gmail.com> (raw)
In-Reply-To: <20180026093225.eklhad@comcast.net>
Hi Karl,
Do not know anything about prepending "on", but...
Out of interest I just tried the latest EB
on https://www.nasa.gov and found that this
page is entirely built in javascript!
That is the base html is real simple, skipping the head, and the scripts -
<body class="html front not-logged-in page-indexhtml show-topics-menu"
class="Array">
<div class="l-page ember-init-hide">
<header class="l-header container-fluid" role="banner"></header>
<div class="l-main">
<div class="l-content container-fluid" id="main" role="main">
<script>
...
</script>
</div>
</div>
<footer class="l-footer container-fluid" role="contentinfo"></footer>
</div>
<script>
...
</script>
</body>
You can see the 'header', 'main', and 'footer' html is
all generated content...
Now I used a special DEBUG version of libtidy which
show many lines of tidy processing this... part of the
output, again skipping the head ....
StartTag body class="Array"
StartTag div class="l-page ember-init-hide"
StartTag header class="l-header container-fluid" role="banner"
StartTag div class="l-main"
StartTag div class="l-content container-fluid" id="main" role="main"
StartTag script
Text (6034) '...y","id":"4739"},];
'
StartTag footer class="l-footer container-fluid" role="contentinfo"
StartTag script
Text (533) '...a);
})();
This basically shows the html page as read, with
no real content...
Then javascript is run, and I should see lots
of generated nodes, but I get almost nothing back...
although libtidy is called some 14 times...
That is the next time tidy is run I only get -
StartTag body
StartTag a href="#"
And similarly the 3rd time tidy is run -
StartTag body
StartTag form implicit
StartEnd input
And again the 4th time tidy is run -
StartTag body
StartEnd link
StartTag table
StartTag a href="/a"
Text (1) 'a'
StartTag form implicit
StartEnd input type="checkbox"
tidy for 5th time
StartTag body
StartTag textarea
Text (1) 'x'
6th time into libtidy
StartTag body
StartTag form implicit
StartEnd input type="radio" checked="checked" name="t"
7th time into tidy
StartTag body
StartEnd link
StartTag table
StartTag a href="/a"
Text (1) 'a'
StartTag form implicit
StartEnd input type="checkbox"
8th time
StartTag body
StartEnd link
StartTag table
StartTag a href="/a"
Text (1) 'a'
StartTag form implicit
StartEnd input type="checkbox"
9th -
StartTag body
StartTag div
And it more or less continues that way
through 10th to 14th time libtidy is called...
That is, there is no substantial html generated,
and as you point out it seems no multiple
hrefs are generated and added to the DOM.
Visually reviewing the page in a browser, I
can see 20 to 50 hrefs. The header is a set of
javascipt driven drop-down links... The body is
some images, each of which is a link... and as
you point out the footer is a set of links, the
last being "Contact NASA" -
link https://www.nasa.gov/about/contact/index.html
So something is either wrong with duktape html
generation, or for some reason it does not get
back to EB, at least not to libtidy...
Now to test a simpler case of javascript html
generation, I constructed a test1.html -
http://geoffair.org/tmp/test1.html - I think
I constructed some of it from your jsrt...
And the first time libtidy is run I see
StartTag body
StartTag h1
Text (5) 'test1'
StartTag script
Text (661) '
func...fair<\/a><\/p>");
That script contains 2 document.write's...
But then the javascript is run, and the
next libtidy output contains the 2 new html
nodes -
StartTag body
StartTag p
Text (24) 'date: 2002/11/25 17:55:9'
StartTag p
Text (6) 'link: '
StartTag a href="http://geoffair.com"
Text (8) 'geoffair'
So everything works well in this `simple` case...
Why does the nasa javascript fail to generate
many, MANY new nodes, with many, many links?
Do not know what else I can try... maybe finding
where duktape passes back html, and add a debug
output, or something... I have tried before debugging
into duktape library, but that is mind boggling...
Will try anything you can suggest...
But hope this helps...
Geoff.
PS: Normally I send this from my Ubuntu
Thunderbird email client but this time
from a Windows machine, so hope it works!
next prev parent reply other threads:[~2018-01-26 19:12 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-19 20:08 [Edbrowse-dev] Error Object Karl Dahlke
2018-01-19 20:51 ` Dominique Martinet
2018-01-25 10:48 ` [Edbrowse-dev] defaultView / cloning onevent$$array Kevin Carhart
2018-01-25 14:07 ` Karl Dahlke
2018-01-25 23:07 ` Kevin Carhart
2018-01-26 2:58 ` Karl Dahlke
2018-01-26 3:50 ` [Edbrowse-dev] nasa / prepending "on" to events Kevin Carhart
2018-01-26 4:59 ` Karl Dahlke
2018-01-26 5:51 ` Kevin Carhart
2018-01-26 6:43 ` Karl Dahlke
2018-01-26 8:10 ` Kevin Carhart
2018-01-26 8:21 ` Kevin Carhart
2018-01-26 9:08 ` Karl Dahlke
2018-01-26 10:38 ` Kevin Carhart
2018-01-26 14:32 ` Karl Dahlke
2018-01-26 19:13 ` Geoff McLane [this message]
2018-01-26 19:28 ` Karl Dahlke
2018-01-27 3:52 ` Kevin Carhart
2018-01-27 18:52 ` Geoff McLane
2018-01-27 21:10 ` Karl Dahlke
2018-01-28 3:12 ` Karl Dahlke
2018-01-28 19:19 ` Geoff McLane
2018-01-28 21:35 ` Karl Dahlke
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