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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Instead of iframe onload?
Date: Fri, 19 May 2017 18:11:30 +0200
Organization: PointedEars Software (PES)
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Martin Honnen wrote:

> On 18.05.2017 14:40, Dr J R Stockton wrote:
>> I use such as
>> 
>>   <iframe src="someHTML.htm" onload="Procrustes(this)"></iframe>
>> 
>> to adjust the height of the iframe to fit the displayed
>> content from page someHTML.htm ; it works in my Firefoxes.
>> 
>> BUT
>>    (1) I've not tested it on all browsers,
>>    (2) If someHTML.htm contains a similar construction,
>>        the 'outer' iframe resizes wrongly, for an obvious
>>        reason,
>>    (3) Validators & testers dislike iframe ... onload.
>> 
>> Is there a better method, acceptable to at least to
>> validator.w3.org,
> 
> I think HTML5 and HTML5.1 do allow the "onload" event handler attribute
> on most elements
> (https://www.w3.org/TR/html5/dom.html#global-attributes) and I don't
> have any problems at https://validator.w3.org/nu/#textarea to validate
> […]

Also, any problems with validators can be circumvented by scripting event 
listeners at the appropriate time:

  iframeRef.onload = function () {
    Procrustes(this);
  };

BTW, quite an interesting name for a function :)  [For those who are 
unaware: Procrustes was the Greek mythological villain who ran a less 
expensive hostel just outside ancient Athens that made his visitor victims 
fit exactly into his bed by either stretching them or sawing off their 
limbs.  He was one of the three villains famously killed by Athens’ hero 
Theseus (who is partly historical) using their own methods against them when 
he traveled to meet his natural father, Aigeus, King of Athens (only that 
Theseus beheaded the tall Procrustes instead).  (I listened to the myth of 
Theseus, beautifully told by Austrian writer Michael Köhlmeier, a few days 
ago.)]

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