533422 - FF doesn't show text between IFRAME tags when frames are disabled

Status: RESOLVED INVALID

(Core :: Layout: Images, Video, and HTML Frames, defect)

Description

[E.P.A.Couzijn]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.1) Gecko/20090624 Firefox/3.5 (.NET CLR 3.5.30729)
Build Identifier: FireFox v3.5

In FireFox, when I set browser.frames.enabled=false (under about:config), the alternate content for IFRAME elements is not processed. Thus, it is impossible to notify the user that his browser does not support frames and offer a non-framed version of the webpage. Also JavaScripts between the <IFRAME>...</IFRAME> tags are not processed, so a workaround with JS detection of frame support is not possible either.

Reproducible: Always

Steps to Reproduce:
1.Open about:config, and set browser.frames.enabled to false
2.For an example, open http://couzijn.110mb.com/test.html
Actual Results:  
The example webpage shows:
(note the empty second line)

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An IFrame is created below:

In FireFox, if you set browser.frames.enabled=false, you will NOT see an alternate message above.
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Expected Results:  
The example webpage should show:

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An IFrame is created below:
Your browser does not support frames!
In FireFox, if you set browser.frames.enabled=false, you will NOT see an alternate message above.
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Comment 1

[gerriediaz]

I have been able to confirm this 3.6 and 4.0 beta. Any updates?

Comment 2

[Boris Zbarsky [:bzbarsky]]

browser.frames.enabled has been removed in bug 1013457.