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Message-ID: <3387373.LFUtorD41v@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <usenet@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Wed, 08 May 2013 14:33:05 +0200
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Subject: Re: Set iframe src without default.
Newsgroups: comp.lang.javascript
References: <ouydnaJoPKrz5hTMnZ2dnUVZ_v2dnZ2d@westnet.com.au> <kmd693$hvp$1@news.albasani.net> <ddudncm65LBvshfMnZ2dnUVZ_rqdnZ2d@westnet.com.au>
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Andrew Poulos wrote:

> On 8/05/2013 7:35 PM, Stefan Weiss wrote:
>> On 2013-05-08 00:08, Andrew Poulos wrote:
>>> I have a page with an iframe in it
>>>
>>> <iframe src="blah.htm"></frame>
>> ...
>>> How do I keep a default src without the default flashing up before the
>>> src is dynamically changed?
>>
>> Why do you need a default src? Instead of changing the src when the page
> 
> If javascript is not enabled then I still need at least something to
> display.
> 
>> loads, you could create and insert the iframe at that point.
> 
> Thanks, though I take JKK and PE's comments on board that the only
> "real" way to do this is server side.

You have misunderstood me at least.  A good solution to your problem is to 
have the client-side script that changes the iframe document in or included 
by the iframe document.  For you can only say for sure on the *client* side 
whether there is client-side script support, whether it is enabled, and 
whether the support is sufficient for the task – simply by executing the 
relevant code (which would contain feature tests).

Stefan's suggestion is another good idea, but apparently not applicable 
here.

There is also a third way combining both suggestions, but it might not be 
among the best ones here: You can include the iframe element displaying the 
default document (or put other content) and replace that programmatically by 
client-side (DOM) script with a new iframe element that displays another 
document.  This is the same approach you would choose if, for example, you 
wanted to include a static Google Maps map (an image) in an HTML document 
(that would work everywhere), and replace it with an interactive Google Maps 
map if possible (“progressive enhancement”).

-- 
PointedEars

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