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 > > > _______________________________________________ > JRex mailing list > [email protected] > http://mozdev.org/mailman/listinfo/jrex >