Thx a lot !! Really thank you to everyone =) !!!
Cliff ----- Original Message ----- From: "Frank W. Zammetti" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <user@struts.apache.org> Sent: Wednesday, May 11, 2005 12:05 AM Subject: Re: [OT] Help !! Too many select-box in one page > I'd suggest doing some testing to determine where the delay is actually > occurring... is it reading from the database that takes so long? Is it > transit time from the server to the client? Is it rendering on the > client? The firsr two you should be able to determine on the > server-side, then just subtract that out from the total time to see how > long the client is taking. > > If it's either of the first two then people have given you some options > to explore already... if it's the later, you'll almost certainly have to > refactor your design... the suggestion of populating the boxes via > scripting is a good one, but I've done this extensively and so can tell > you that it will become a bottleneck in a hurry, no to mention the fact > that the perceived performance of your site can vary greatly depending > on the clients' PC. > > Hence, my suggestion... once you determine where the greatest amount of > time is actually spent, then folks can probably help in a hurry :) > > -- > Frank W. Zammetti > Founder and Chief Software Architect > Omnytex Technologies > http://www.omnytex.com > > John Fletcher wrote: > > Cliff, > > > > > >>>>but each select in each list has the same options. > > > > If each select in each list has the same options, you can just download > > the options once to a javascript array and populate all of the select > > boxes on the client side. A quick example: > > > > <script language="JavaScript"> > > var optionArray = {<c:out value="${myValuesCSV}" />}; > > > > function populateBoxes() { > > var mySelectBox; > > // You'll need to do this for each box on your form > > for (var i = 0; i < optionArray.length; i++) { > > mySelectBox.options[i] = new Option(optionArray[i], > > optionArray[i]); > > } > > } > > </script> > > > > Call that populateBoxes function on startup. Who knows how long that'll > > take to populate client-side, but it should reduce your page size > > considerably. If you need different values than text in the select > > boxes, you could either have a 2-dimensional array (which would require > > different formatting for the values, or a different method of printing > > them out in the javascript), or you could maintain 2 arrays, one for > > values and one for text. Note that you will need to know all of the > > names of the select boxes unless you want to just loop through all of > > the form elements and do the action for any of the select form elements > > that you find. > > > > Your CSV string that you drop into the optionArray will need to have > > strings quoted if necessary of course. > > > > John > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
