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https://issues.jboss.org/browse/RF-12268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12697515#comment-12697515
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Ján Jamrich commented on RF-12268:
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I've updated page with issue simulation.
Firstly I understood it wrong - I missed fact that second command button is
conditionally rendered (I thought it had disappeared accidentally).
So now it example contains 2 buttons, first with action handler with 3s delay,
and with updating variable value which is used as condition to render second
command button.
(Note: you should get this application (Metamer) from
[email protected]:richfaces/qa.git (module Metamer/application) to play around
this example. I referred to this example running on my laptop in my comment
above.
> 4.1.0.final javascript error : element is null, ajax queue operation
> --------------------------------------------------------------------
>
> Key: RF-12268
> URL: https://issues.jboss.org/browse/RF-12268
> Project: RichFaces
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: component
> Affects Versions: 4.1.0.Final
> Reporter: zhifu Jin
> Labels: richfaces, waiting_on_user
> Original Estimate: 1 day
> Remaining Estimate: 1 day
>
> the issue is when have two requests like below will cause js error:"element
> is null" and browser crash.
> 1. first request sending, and don't have response arrived.
> 2. the second request start, will add this request into queue.
> 3. first response arrived , the second request will be dequeue
> and send request, it will find source element first, and our page had
> changed, the element is null.
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