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https://issues.apache.org/jira/browse/WICKET-1563?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Igor Vaynberg resolved WICKET-1563.
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Assignee: Igor Vaynberg (was: Matej Knopp)
Resolution: Incomplete
please provide a quickstart
> renderOnLoadJavascript being called multiple times
> --------------------------------------------------
>
> Key: WICKET-1563
> URL: https://issues.apache.org/jira/browse/WICKET-1563
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.3.3
> Reporter: Carlos Pita
> Assignee: Igor Vaynberg
>
> There are at least of couple of common scenarios where this happens:
> - you add the component that is a header contributor to an ajax target:
> renderHead is called as part of target.respond() and latter by page.detach()
> - you add the component that is a header contributor more than once to an
> ajax target. Normally you can't control this, because the component in
> question is added by another component indirectly, by adding some of its
> ancestors. renderHead is called multiple times as part of target.respond()
> and latter yet another time by page.detach()
> I think there must be a check to avoid repetitions of these nature, maybe by
> means of an id, the same as renderJavascript() does.
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