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Groups > comp.lang.javascript > #19563

Re: Know if element is in iframe

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Andrew Poulos wrote:

> I have a page with an iframe. The some elements in the page in the
> iframe call a function in the parent page and pass 'this' to it eg.
> 
>    <span onclick="window.parent.func(this);">blah</span>
> 
> When I put an alert on the parameter in func I get
>    [object HTMLSpanElement]
> irrespective of whether the element is in the iframe or the parent page.
> 
> How can I distinguish between the two?

  var thisDocument = document;

  function func (target)
  {
    if (target.ownerDocument == thisDocument)
    {
      /* target is in the frameset document */
    }
  }

If the “ownerDocument” property was unavailable, you could compare the 
references to the root element objects by traversing the trees upwards by 
“parentNode”.

I strongly recommend not to attach vital functionality to “div” and “span” 
elements.

-- 
PointedEars

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

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Know if element is in iframe Andrew Poulos <ap_prog@hotmail.com> - 2013-05-02 09:49 +1000
  Re: Know if element is in iframe Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-02 02:19 +0200
    Re: Know if element is in iframe Stefan Weiss <krewecherl@gmail.com> - 2013-05-02 02:32 +0200
      Re: Know if element is in iframe Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-02 02:34 +0200
        Re: Know if element is in iframe JJ <duh@nah.meh> - 2013-05-02 12:31 +0700
          Re: Know if element is in iframe Stefan Weiss <krewecherl@gmail.com> - 2013-05-06 19:57 +0200
            Re: Know if element is in iframe Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-07 10:09 +0200
  Re: Know if element is in iframe Denis McMahon <denismfmcmahon@gmail.com> - 2013-05-02 14:41 +0000
    Re: Know if element is in iframe Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-05-02 21:03 +0200
      Re: Know if element is in iframe Dr J R Stockton <reply1300@merlyn.demon.co.uk.invalid> - 2013-05-03 20:03 +0100

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