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From "Onno Scheffers (JIRA)" <...@tapestry.apache.org>
Subject [jira] Commented: (TAPESTRY-2364) YSlow Recommendation: Write Scripts at bottom of page
Date Tue, 07 Oct 2008 00:53:44 GMT

    [ https://issues.apache.org/jira/browse/TAPESTRY-2364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12637332#action_12637332

Onno Scheffers commented on TAPESTRY-2364:


Hi Filip,

I know that dom:loaded will be called before images etc. are loaded, but that is just my point:
The js-files that attach to the event may not be loaded before the images. As a matter of
fact: The dom:loaded event should have passed by the time the scripts are loaded (since the
browser doesn't wait for them, but the dom is ready). 

Prototype seems to be smart and fires the event, even if it the listener is attached after
the event actually occured, but I've had this problem with JQuery a while back where Javascripts
couldn't act on the domloaded event anymore because they were loaded after the dom was ready.

> YSlow Recommendation: Write Scripts at bottom of page
> -----------------------------------------------------
>                 Key: TAPESTRY-2364
>                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2364
>             Project: Tapestry
>          Issue Type: Improvement
>          Components: tapestry-core
>            Reporter: Howard M. Lewis Ship
>            Assignee: Howard M. Lewis Ship
>            Priority: Minor
>             Fix For: 5.0.12
>         Attachments: sayHello.js, TestFast.html, TestSlow.html
> Tapestry is already doing a good job on this, by writing the dynamically generated <script>
block at the bottom of the page, but the external scripts should also be down there.
> http://developer.yahoo.com/performance/rules.html#js_bottom

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