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Re: Get inner text of HMTL element

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Cezary Tomczyk wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Cezary Tomczyk wrote:
>>> To get inner text of HTML element I've been using:
>>>
>>> function get_inner_text(node) {
>>>       if (node.nodeType === 3) {
>>>           return node.data;
>>>       }
>>>
>>>       var txt = '';
>>>
>>>       node = node.firstChild;
>>>       while (node) {
>>>           txt += get_inner_text(node);
>>>           node = node.nextSibling;
>>>       }
>>>       return txt.replace(/\s+/g, ' ');
>>                ^^^^^^^^^^^^^^^^^^^^^^^^
>> This is _not_ equivalent to node.textContent, see
>> <http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#Node3-textContent>.
> 
> I see. In documentation I've read that "No whitespace normalization is
> performed and the returned string does not contain the white spaces in
> element content[...]."
> 
> As for "whitespace normalization" I found that it's about "(spaces,
> tabs, and blank lines)" (http://www.w3.org/TR/REC-xml/#sec-white-space).
> However, "blank lines" means "new line" using \r\n or \r or \n, right?
> 
> Also, how "whitespace normalization" should work? E.g. replacing "   "
> to " "?

RTFSpec.  However, since it says there that “*no* whitespace normalization 
is performed” with “textContent”, you do not have to concern yourself with 
that in “textContent” emulation.

However, ISTM that at least Chromium “Version 32.0.1700.123 Debian 
jessie/sid (248368)” does not implement “textContent” as specified: “the 
returned string does not (read: MUST NOT) contain the white spaces in 
element content (read: “element content whitespace” as per XML), but it does 
there.  With

  var div = document.createElement("div");
  div.appendChild(document.createTextNode("  "));

  var span = document.createElement("span");
  span.appendChild(document.createTextNode("  "));

  div.appendChild(span);

“div.textContent” yields four spaces there, but IIUC should yield only two 
because the whitespace preceding the “span” element would be “element 
content whitespace” per XML.

<http://www.w3.org/TR/2004/REC-xml-infoset-20040204/#infoitem.character>

The reason for that may be that the first child object implements the Text 
interface of DOM Level 3 Core only incompletely: it implements the 
splitText() method introduced in Level 1 Core, and the “wholeText” attribute 
and replaceWholeText() method introduced in Level 3 Core; but it does not 
implement the “isElementContentWhitespace” attribute also introduced in the 
latter Specification.

<http://www.w3.org/TR/DOM-Level-1/level-one-core.html#ID-1312295772>
<http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/core.html#ID-1312295772>

> Any suggestions?

Yes.

<http://www.catb.org/~esr/faqs/smart-questions.html>

-- 
PointedEars

Twitter: @PointedEars2
Please do not Cc: me. / Bitte keine Kopien per E-Mail.

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Thread

Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-22 18:21 +0100
  Re: Get inner text of HMTL element Martin Honnen <mahotrash@yahoo.de> - 2014-02-22 19:31 +0100
    Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-22 20:51 +0100
      Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-22 21:11 +0100
        Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-22 21:37 +0100
          Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-22 22:05 +0100
            Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-22 23:38 +0100
              Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-23 10:43 +0100
                Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-23 14:50 +0100
                Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-23 15:48 +0100
                Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-24 21:01 +0100
                Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-24 22:34 +0100
                Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-27 21:41 +0100
                Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-27 22:32 +0100
                Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-28 13:44 +0100
                Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-28 16:54 +0100
                Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-03-04 20:51 +0100
                Re: Get inner text of HMTL element ompalompasales2@gmail.com - 2014-03-04 12:59 -0800
  Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-22 20:59 +0100
    Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-22 22:23 +0100
      Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-22 23:32 +0100
  Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-22 21:27 -0300
    Re: Get inner text of HMTL element "se" <se@no-one.here> - 2014-02-23 05:35 +0100
      Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-23 15:29 -0300
        Re: Get inner text of HMTL element "se" <se@no-one.here> - 2014-02-23 21:01 +0100
    Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-23 20:02 +0100
      Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-23 21:55 +0100
        Re: Get inner text of HMTL element Cezary Tomczyk <cezary.tomczyk@gmail.com> - 2014-02-24 08:37 +0100
          Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-24 12:30 +0100
            Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-24 15:09 -0300
              Re: Get inner text of HMTL element Christoph Michael Becker <cmbecker69@arcor.de> - 2014-02-24 19:43 +0100
                Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-24 18:12 -0300
                Re: Get inner text of HMTL element Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2014-02-24 22:51 +0100
              Re: Get inner text of HMTL element Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-25 19:49 +0000
                Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-26 05:20 -0300
                Re: Get inner text of HMTL element "se" <se@no-one.here> - 2014-02-26 17:10 +0100
                OT - Re: Get inner text of HMTL element Joao Rodrigues <groups_jr-1@yahoo.com.br> - 2014-02-26 15:48 -0300
                Re: OT - Re: Get inner text of HMTL element "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-26 22:43 +0100
                Re: OT - Re: Get inner text of HMTL element Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-27 15:00 +0000
                Re: OT - Re: Get inner text of HMTL element "Evertjan." <exxjxw.hannivoort@inter.nl.net> - 2014-02-28 10:50 +0100
                Re: OT - Re: Get inner text of HMTL element "se" <se@no-one.here> - 2014-02-27 10:57 +0100
                Re: Get inner text of HMTL element Dr J R Stockton <reply1400@merlyn.demon.co.uk.invalid> - 2014-02-27 15:46 +0000

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