Re: Increase performance

"Ronald Hughes" <[email protected]> Wed, 9 May 2007 09:31:32 -0700
Newsgroups gmane.comp.mozilla.jrex
Message-ID <[email protected]>
I saw the subject line and immediately thought it was spam.  :-)

--Ron


On 5/8/07, Billy <florian-lindner-S0/[email protected]> wrote:
> Hi,
> I have some performance problems.
>
> Here is one example:
>
> 1) Extract a DOM document
> 2) Create a NodeList of all Elements with tag "A" (links)
> 3) do a for loop on all this nodes of the nodelist
> 4) Simulate a click event
>
> That all takes over 1 second.
>
> Step 1) and 2) take 0.1 seconds together and step 4) 0.1 seconds alone.
> Step 3) takes a lot of time. My for loop looks like that:
>
> for (int i=0;i<nodelist.getLength();i++) {
>     if (nodelist.item(i).getAttribute("aAttribute").equals("foo"))
>       if (nodelist.item(i).getTextContent().toLowerCase().equals("sth")
>           <do a click ~ step 4>
> }
>
> These 1.5 seconds are measured for a document with 16 links in the
> nodelist. Why does it take such a lot time? Is this caused by my system
> (Windows XP, 512MB RAM, 1,4 GHz Intel Centrino)
> or does JRex need a lot of time for iterating over a
> nodelist and get some tags? If so is there any way to improve the
> performance here?
> Thx and best regards.
> Billy
>
>
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