Synchronous Call Not Working In FF
May 7, 2009
Am working on a form, which has around 10 fields and 1 field for the captcha. Assuming that the user enters the wrong captcha code, am trying to use Ajax to ensure that the other field information isnt lost due to form submission.
I have also written a validation script, to ensure that all the field values have been entered.
I have written the ajax script, and am using this:
Code:
xmlhttp.open("GET",url, false);
The reason I am making a sync call is, depending on whether the user has entered the correct code, I am going to submit the form using javascript.
With IE, this works fine, but with FF it doesn't. Is there a workaround for this? If so, how?
The entire code for reference:
Code:
var xmlhttp
function showHint(str)
{
if (str.length==0)
{
[Code]....
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Apr 20, 2009
I have an ajax call that I want to display an ajax loader image before it makes the call and then hide that image after it completes the call. The below code is working fine in FF. But when the code is run in IE, for some reason the ajax call is made first and then the image isn't displayed until after the ajax call has completed. I've tried putting the .show() method before the ajax call and even in the beforeSend option of the ajax call, for some reason IE STILL makes the ajax call, and waits for it to complete, before it displays the image.
[Code]...
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Aug 8, 2011
synchronous vs asynchronous $.post
may i know the difference?
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Aug 20, 2011
I need to create a callback for a line of code that performs asynchronous work so that another a line of code can be called after it is finished. I've found a number of webpages that attempt to show how this can be done with two functions, one calling the other in Russian-doll fashion, but I can't see how to do it with my code.It takes the URL of a sound file, redefines a previously defined embed to point at that sound file, and then plays it. The problem is that I lose focus on the documentElement that was selected before the playIt() function is called. So in the playIt() function I save the focused element in a variable and focus() it after the embed-switcheroo and autoplay is performed. This doesn't work, because the "e.parentNode.replaceChild(clone, e);" is performed asynchronously; when it finishes, it clears the focus in the document (internal id's have changed? Reason unknown.) So I need the focus() code to follow the replaceChild() code. I want to accomplish this by having the focus() code execute as a callback following the replaceChild() code. How would I break this into two procedures, one calling the other, reproducing a synchronous flow?
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May 31, 2007
An experiment i'm doing requires requires a synchronous cross-domain
request, without using a proxy. I wondered if anyone had any ideas to
help me achieve this.
Below is what I have tried, including my conclusions/assumptions
(which i'll happily be corrected on if it solves my problem!):
The requirement not to use a proxy means I can't use the synchronous
mode of XMLHttpRequest, as it will not let me go cross-domain.
On-demand loading of javascript enables me to achieve the cross-domain
request by loading javascript of the form:
callback(data);
which on loading calls callback(), but it is not obvious how to make
this synchronous. I've also managed to get the same effect using a
hidden IFRAME, but again it relies on a callback. Is there a good way
to wrap/transform this in to a synchronous request? Code:
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Dec 9, 2011
I'd like to process several blocks of parallel actions, but in a sequential manner.
As an example:
Thus, I want to process blocks, from which I don't know how long they will take and afterwards have a couple of actions, before beginning with another block. I already tried it through using .queue, .ready() etc, but that leads to very ugly or unusable code..
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Aug 16, 2010
I am using the awesome malsup cycle plugin, but it seems like the sync: true option isn't working 100% synchronous. If I activate the sync option and let exactly the same images fade, a short opacity effect occurs.
$(document).ready(function() {
$('.slideshow').cycle({
fx: 'fade',
sync: true,
speed: 1000,
timeout: 4000
});});
<div class="slideshow">
<img src="[URL]" width="200" height="200" />
<img src="[URL]" width="200" height="200" />
<img src="[URL]" width="200" height="200" />
<img src="[URL]" width="200" height="200" />
<img src="[URL]" width="200" height="200" />
</div>
I would like to fade some images with only few differences, and for the user it should look like only those few parts of the image change.
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Jul 16, 2009
I need to do something unusual. Say a user is browsing my site, and before they navigate away, I need to perform some actions like logging them out, for which they would need some data from the server. On onunload, a SJAX request (AJAX with that parameter as false) is issued, code flow hangs, and when the result comes in, code flow resumes and does what it needs to. If AJAX were used, the script would unload and never get the callback. Ok. So that's what I want. The problem is that I'm dealing with something other than an XMLHttpRequest object, and I can't simply supply a false parameter to the request function. I'm looking for some way to wrap an asynchronous routine of this object into a synchronous one. If call var result = myobject.get(data_to_send), code flow here hangs WHILE myobject calls this funky XMLHttpRequest-like object in asynchronous mode, waits for the callback, the callback is called, and myobject returns the result. So code stops synchronously outside of myobject.get, but waits asynchronously inside.
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Dec 12, 2009
I have been using asynchronous requests for a long time. so the response was processed in a callback function. I thought of not using async so i made synchronous requests. The reason is that i dont have to have two more lines for checking the status and the onreadystatechange.... my synchronous requests would be like this...
[Code]....
so from the code you can understand that there is no need of a callback function and if conditions to check ready state... ... So there is no problem in the above code. The problem araises here... if i press the F5 (refresh) key or do a page refresh when the process is waiting for the response i get an (NS ERROR - firefox ( i have not yet checked that in IE browsers) (javascript error) though the process completes successfully. why?
Do we have to check whether the page is navigating away while in synchronous operation and abort the request? or what could be the reason for the error. This will not happen in async requests because that is also the reason for async...
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Feb 22, 2011
I'm trying to make a little loop that in each itteration executes a little php script to send mail with the mail() function. the php script returns either succes or failure. Now its my intention to append that msg to a div, after every execution.
$.ajax({
type: "POST",
data: dataString2,
url: "sendmail.php",
async: false,
success: function(result)
{
showStatus(result);
[Code]...
the show status(result) is nothing more then a .append(result) the zenMails(y) calls this function again to send the next mail. It does work though but it only updates the div after the entire loop is done, i 'ld think it ld do so after every execution since i call the showstatus when the synchronous call is done and only after that i call the next iteration. Is there anyway to work aroud this ? (making the call assync doesnt work , because the port for sending the mail would still be in use)
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Aug 26, 2010
When I try to fetch a page asyncronously I get a status 0 and the response text is empty: PHP Code:
var loaderImage = document.getElementById("loader");
loaderImage.style.display = "inline";
xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState==4 && xmlhttp.status == 200) {
response = xmlhttp.responseText;
alert(response);
[Code]....
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May 4, 2007
I'm new to JS / Ajax; I've been trying to do an Ajax call to my
Webservice ( I'm using C# for code-behind). I'm not using any of the
libraries available. I am sending my CustID to the webservice and the
webservice returns a Dataset that contains various customer details
taken from database. I have tested that the Webservice itself works.
But my ajax call is not working.
My ajax call is something like:
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Jun 22, 2011
[code] When I move the testFunction outside of jQuery it works:[code]I realize it has something to do with the order of the DOM vs the Flash loading, but I don't know what to do about it. I need that function to be inside$(document).ready(function() {}); The function in question on the actual site is jQuery plugin function (jScrollPaneapi.getContentPane().load) - i.e. I am trying to get a button in the flash movie to load content into a jScrollPane. If I move that function outside of jQuery, it is recognized by flash, but it doesn't function.I have tried moving the embedFlash inside the$(document).ready(function() {}), I tried using a swfObject call back to make sure the flash is loaded - nothing works.
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Apr 15, 2011
<script language="javascript" type="text/javascript">
$("document").ready(function () {
initialiseAjax();
t = setTimeout("changeAds()", 8000);
});
function changeAds() {
[Code]...
The problem is that 'line 1 and line3 are executed but line2 is never executed.' If i comment line1 and line3 then line2 is getting executed
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Jan 17, 2010
I am trying to make an onblur that calls a function and passes it some text, for example:
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Nov 19, 2011
This may be a NOOB question and I am new to jquery itself so my syntax may just be incorrect but I do work with javascript and php quite a bit.Anyway here is a piece of sample code that is correct and does what is expected
[Code]...
From what I have read I believe the format is correct in my function. In PHP I have a print_r function that would dump an array where regular echo commands would simply output array so this may be a similar issue. I am not sure.
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Oct 19, 2009
<script language="javascript">
$(document).ready(function()
{
[code]....
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Jul 5, 2011
im not able to figure out why my jQuery ajax call isnt working but my old JS method is? [code]
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Mar 9, 2010
I'm a newbie to jquery and am using jquery version 1.4.2 in my java application. I am trying to develop an application, where I am accessing the data available in a remote server and rendering the data in an HTML page in my local system, using an Ajax call. The code works fine in IE7 and above. However, I am facing a problem in Firefox ( version 3.5.8) and google Chrome. The following error is reported in Firefox [code]
While searching in google on this error, I have found that this occurs because Firefox's security model does not allow retrieving/accessing localhost resources.Also Firefox does not allow accessing resources from other domains.The following are the source code of the html and js files [code]Is there anything that I am missing? Or, is there any other way for carrying out this functionality?
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May 18, 2010
I have the following code:
$(document).ready(function(){
$('#link').click(function() {
alert('Clicked!');
$('#content').load('dialogs/load/content', function() {});
});
});
The link is a normal link that is not dynamically created. The alert works. I know the problem is not the Ajax call because this works just fine:
$(document).ready(function(){
$('#content').load('dialogs/load/content', function() {});
$('#link').click(function() {
[Code]....
It only breaks when located inside the click handler. It does not return response headers or a response. Is there something about event handlers and ajax that I'm missing?
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Oct 20, 2010
I've used to an AJAX call to load a HTML table into div. This is working successfully. I know want to use a click event on buttons located within the inserted table.
The click event is triggering on buttons outside the inserted table but not on the buttons within the table.
Do I need to call some sort of refresh function to so that jQuery is able to pick up these events?
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Oct 15, 2011
big fan -- first time poster. I've been learning javascript and jquery on the fly so bear with me if I seem to lack understanding of what may be semantic basics.
Anyway, I'm building a mobile app using phonegap. One page grabs data for a table from ajax, and each table element has a delete button in one of the cells. In short: the clicks aren't working. I put the alert in to test, and no dice. I'm not asking for help on the internals, I'm just stumped on why the function isn't being activated,
[Code]...
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Jan 2, 2009
i have an iframe inside a page(main). In that iframe, i am calling a java script function that is in the main page.This function call is working in Mozilla , IE but not in Safari and google chrome?? Is there any specific reason for that? when i add the function in the iframe it works.
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Oct 24, 2010
I want to make a page which loads the div's with ajax The html code of the page is
Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
//styles and other script code
<script language="javascript" src="../js/intro.js"></script>
</script>
[Code]....
Now the problem is that javascript "freezes" and setInterval does not work.. Is there any solution to load the files order such i have it in code one-by-one and run the message function?
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Apr 30, 2010
I need to make a $.post call on the beforeSend event of another $.ajax call.I read the documentation and I see that if the beforeSend return false the ajax call will be interrupt.So I made this code but doesn't work, because the real value of the beforesend function isn't true or false, is the value of the post.I have to do this because when you click on a link I need to verify before if you are able to do this via db permission of my webapp.I think you don't understand...This is the code:
$.ajax({
async: true,
beforeSend: function(){[code]....
});I see always the alert of success event, so the return of the beforesend is not correctly done.
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Dec 14, 2010
The general framework is a simple user login function. The user name is selected and a password entered as usual. The function grabs the element values and passes them to a php page that queries the database. An AJAX call returns the password to the function and then I want the innerHTML to be a choice of two web pages, depending on success or failure of validation. There are existing AJAX functions available on the internet but they are overly complicated for what I think should be a simple, quick to load function.
Where I am stuck is that the standard procedure to make an AJAX call is the browser window event. How do you make the call from within the function? I have tried creating two new variables, "success" and "again" to replace xmlhttp, but still stumble on the event to assign a value. I left the blank password protection (if statement) with that variable to demonstrate what I mean.
I've put in my code below, which is in development and successfully alters the innerHTML text depending on user input but I can't figure out how to insert the relevant php page. I have '// out' the testing bits, but left them for info. (I have tried full 'scripting' as the innerHTML, but it's messy.)
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