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Message-ID: <1805136.E3oRWK2ye4@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <usenet@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Thu, 09 May 2013 12:26:44 +0200
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Subject: Re: Set iframe src without default.
Newsgroups: comp.lang.javascript
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Andrew Poulos wrote:

> On 8/05/2013 10:33 PM, Thomas 'PointedEars' Lahn wrote:
>> Andrew Poulos wrote:
>>> 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”).
> 
> Is it "better" to replace one iframe with another instead of just
> changing the iframe's src?

Depends.

> I've tried a way that was previously suggested (dropping the noscript,
> and instead dynamically changing the src with a script element
> immediately after the iframe element in the HTML) and it seems to do
> what I need.

It is inherently unreliable, though.

-- 
PointedEars

Twitter: @PointedEars2
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