Ajax slow on IE7

Hi, I got three cfselects on one page...
<cfselect name="company"
style="width:200px;"></cfselect>
<cfselect name="project" style="width:200px;"
bind="cfc:components.test.getProjects({company})"
bindOnLoad="no"></cfselect>
<cfselect name="activity" style="width:200px;"
bind="cfc:components.test.getActivities({project},{company})"
bindOnLoad="no"></cfselect>
and one <cfgrid> has
bind="cfc:components.test.getData({cfgridpage},{cfgridpagesize},{cfgridsortcolumn},{cfgri dsortdirection},
document.insertForm.date[0].value)".
Everything works very fast in Firefox but is really slow
(unuseable) in IE7. Seems like it's a lag before IE7 posts the
ajax-message to the server.
Any ideas?

Hi
I ran acros similar problems using the FCK-Editor
(integration with <cftextarea richText="true" ... > and the
old fashioned way using the cfc) and have made some tests end of
last week.
First of all: What kind of OS you're running? I'll bet it's
vista (because my problemes occured just with that system).
What I figured out was that the time, IE needs to render the
page respectively to perform all the DOM manipulations, risies
exponentially with the number of nested layout tags, especially
<cflayout ... > / <cflayoutarea ... >. It seems to me
as if the JScript engine (which isn't realy performant anyway),
reaches it's limits in this case...
With the ressources monitor of vista it's no problem to
protocol the CPU-load-peaks (up to 90%) while processing the
FCK-Editor scripts.
Does anyone made similar experiances?

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Hi Denes,
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Below is my code...
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l_Select.length = 0;
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BEGIN
OWA_UTIL.mime_header ('text/xml', FALSE);
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HTP.p ('Pragma: no-cache');
OWA_UTIL.http_header_close;
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WHERE MODEL_YEAR =
CASE
WHEN :MODEL_YEAR_ITEM_1 = '0'
THEN MODEL_YEAR
ELSE TO_NUMBER(:MODEL_YEAR_ITEM_1)
END
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LOOP
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function loadXMLDoc()
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alert("arundj");
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xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
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alert("inside");
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Regards,
Arun

Hi Arun,
If you would like to just change the content of the chart than I would recommend below solution.
This way you don't have to worry about AJAX calls and UI takes care of them.
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sales : 34
country : 'USA',
product : 'quadcopter',
sales : 40
country : 'China',
product : 'tricopter',
sales : 65
country : 'France',
product : 'tricopter',
sales : 10
country : 'China',
product : 'quadcopter',
sales : 50
country : 'Germany',
product : 'tricopter',
sales : 15
country : 'USA',
product : 'tricopter',
sales : 22
country : 'USA',
product : 'heli',
sales : 96
country : 'China',
product : 'airplane',
sales : 86
country : 'France',
product : 'airplane',
sales : 76
country : 'Germany',
product : 'airplane',
sales : 58
country : 'USA',
product : 'airplane',
sales : 96
country : 'China',
product : 'heli',
sales : 26
country : 'France',
product : 'heli',
sales : 71
country : 'Germany',
product : 'heli',
sales : 76
data_new : [ {
quantity : '10',
product : 'quadcopter',
sales : 34
quantity : '16',
product : 'quadcopter',
sales : 40
quantity : '20',
product : 'tricopter',
sales : 65
quantity : '86',
product : 'tricopter',
sales : 10
quantity : '91',
product : 'quadcopter',
sales : 50
quantity : '45',
product : 'tricopter',
sales : 15
quantity : '70',
product : 'tricopter',
sales : 22
quantity : '37',
product : 'heli',
sales : 96
quantity : '55',
product : 'airplane',
sales : 86
quantity : '29',
product : 'airplane',
sales : 76
quantity : '68',
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sales : 58
quantity : '79',
product : 'airplane',
sales : 96
quantity : '81',
product : 'heli',
sales : 26
quantity : '69',
product : 'heli',
sales : 71
quantity : '87',
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width : "100%",
height : "200px",
title : {
visible : true,
text : 'Test Stacked Column Chart'
var oCB = new sap.ui.commons.CheckBox("compare", {
text : "Compare with Previous Year",
checked : false,
change : function() {
if (oCB.getChecked()) {
oChart.destroyDataset(dataset);
oChart.setDataset(dataset_new);
oChart.rerender();
} else {
oChart.destroyDataset(dataset_new);
oChart.setDataset(dataset);
oChart.rerender();

How do I send "unlimited" text in a parameter using "POST" in Ajax

I'm trying to send large amounts of text data to the server using POST rather than GET, using Ajax
However, I am only able to send a max of 9.76 kb
I start with a jsp page, which calls a javascript method that utilises Ajax, which sends the text in a parameter in a XMLHttpRequest object
to a servlet. The text is derived from options values in a multi select combo box.
Here's my code:
Code snippet from .jsp page:
        <table>
        <form name="form1" id="form1" method="POST">
           <tr>
              <td>
             <select name="sel" id="sel" multiple="multiple" size="0"></select>
          </td>
          <td>
             <input type="button" id="sendOpts" name="sendOpts" value="Send Options" onClick="jsObj.sendOpts()">
          </td>
          </tr>
       </form>
       </table>Code snippet from jsObj.js file:
//=================================================
// jsObj object
//=================================================
jsObj = new jsObj();
function jsObj() {
     this.sendOpts = function() {
          if(!confirm('Send Option Values?'))
               return;
          if (window.XMLHttpRequest) { // code for IE7+, Firefox, Chrome, Opera, Safari
               xmlhttp=new XMLHttpRequest();
          } else { // code for IE6, IE5
               xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
          xmlhttp.onreadystatechange=function() {
               if(xmlhttp.readyState==4) { // 4 = The request is complete
                    if (xmlhttp.status==200 || window.location.href.indexOf("http")==-1) {
                         alert(xmlhttp.responseText); // When I copy and paste all the text from this alert to text editor and save the file, the largest the file can be is 9.76 kb.
          var url = 'testSize'; // Servlet that simply retrieves the sent String in a parameter and sends it back to this method
          var sel = document.getElementById('sel');
          var str = sel.name + '=';
          var delim = ':';
          for(var i = 0; i < sel.length; i++) {
               str += encodeURIComponent(sel.options.value + delim); // 'encodeURIComponent' encodes any special characters within the parameter values
          xmlhttp.open("POST",url,true);
          xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); // This is needed for any POST request made via Ajax
          xmlhttp.send(str); // send the parameter and it's value to the servlet
}Code snippet from 'testSize' servlet:package test;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.*;
public class TestSize extends HttpServlet {
     public synchronized void doGet(HttpServletRequest request,
          HttpServletResponse response) throws ServletException,IOException {
          PrintWriter out = null;
          try {
               response.setContentType("text/html");
          out = response.getWriter();
               String str = request.getParameter("sel");
               str = str.substring(0, str.length()-1); // cut off last delimiter
               out.println(str);
               } catch (Exception e) {
     public synchronized void doPost(HttpServletRequest request,
          HttpServletResponse response) throws ServletException, IOException {
          doGet(request, response);
}Any help greatly appreciated.
Edited by: Irish_Fred on Feb 25, 2010 5:14 AM

Yes, I tried that.
I set the "ACTION" of the form to the servlet and then used the form.submit() method to POST the text to the servlet.
i.e.: I selected many options in the select combo, concatenated them to one string, set the 'value' property of a form text field to
this string, did a 'form.submit()' to the servlet and I was able to send a much larger amount of text.
( The .txt file I saved from the resulting text equaled about 30 kb in size, so obviously I can send much more
data this way. )
However, I want to use Ajax, so I don't have to reload the page. I 'borrowed' the Ajax part of the code from a website:
http://www.javascriptkit.com/dhtmltutors/ajaxgetpost2.shtml
and I presumed that because the author used "POST" as opposed to "GET", I would be able to send larger
chunks of data. Obviously not, or there's another reason for the limit of data I can send using my present code,
which I'm not seeing. I'm fairly new to jsp, Ajax & Servlets, so this is no surprise.
If anyone can point out to me where I'm going wrong, I'd greatly appreciate it. Cheers.

Fix For Slow Safari On Windows

A number of people reported that Safari was running very slow for them on Windows. I was someone who was also seeing the same behavior. Web pages that would open up in 2 seconds under IE7 could take literally minutes to fully draw in Safari.
Someone mentioned a proxy issue in one of the other threads, and I got to thinking about that...I made a tiny change, and the problem is gone! Safari is now full steam ahead for me, compared to the snail is was before.
Here is how I fixed the issue.
1 - Click Start and open the Control Panel.
2 - Open the "Internet Options" Control Panel.
3 - Click the "Connections" tab at the top.
4 - Click the "LAN Settings" button at the bottom.
5 - Uncheck the "Automatically Detect Settings" Box.
6 - Click OK to exit the "LAN Settings" window.
7 - Click OK to exit the "Internet Options" window.
Your mileage may vary, but this really did work for me. Nothing else I had tried (clearing the cache, re-installing, etc.) made a difference...but this did. Not sure why it's not affecting everyone, but this doesn't seem to have any negative side effects. IE7 is still working fine for me with the "Automatically Detect" box unchecked.
Enjoy!
-- Matthew Ryan

A number of people reported that Safari was running
very slow for them on Windows. I was someone who was
also seeing the same behavior. Web pages that would
open up in 2 seconds under IE7 could take literally
minutes to fully draw in Safari.
Your mileage may vary, but this really did work for
me. Nothing else I had tried (clearing the cache,
re-installing, etc.) made a difference...but this
did. Not sure why it's not affecting everyone, but
this doesn't seem to have any negative side effects.
IE7 is still working fine for me with the
"Automatically Detect" box unchecked.
Please, report this bug to Radar: http://bugreport.apple.com It's important to notice Apple developers about this issue

Ajax slow on IE7

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