JQuery :: Synchronous Ajax Call Being Ran Out Of Order In IE?
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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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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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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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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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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Aug 8, 2011
synchronous vs asynchronous $.post
may i know the difference?
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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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Mar 16, 2011
I wrote the following code with Dreamweaver:
If I run it in Dreamweaver It works and the alert success is raised, but If I run this code into Safari or Chrome the Error alert is always raised.
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May 10, 2011
My goal is to get some HTML content including some UI widgets and other stuff via an ajax call. To clarify my goal and the strange behavior, I attached some HTML files, that you can run for yourself. Open the index.html will show you some UI widgets, which are pulled from the ajax.html via ajax. When you scroll to the bottom you can see the same content inserted a second time. But this time, the widgets are not "rendered". It looks if the "button()" calls etc. are not executed.
The only difference is the way I insert the result of the ajax call. The first time I insert the hole content received by the ajax call, the second time I only insert the content of a special div. The goal in this is to get various chunks of content with one ajax request and replace "div#one" and "div#two" with different parts of my site. Which is not working. Is it generally okay to receive html content which has some script parts to be executed via ajax and what is wrong with my second approach?
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Aug 9, 2009
I'm currently using the dialog functionality (modal form) from UI library to submit data to the database. All the validation checks have been running ok until one of the validation checks requires a ajax call to check if a username exist in the database. I'm fairly new to both javascript and jquery so this could be a fairly basic blunder. Initially, i thought it was an synchronicity problem, but I changed the $.ajax async option to true but still no joy, so maybe it something to do with scope etc?
Here's the code:
function checkIfUsername(){
$.ajax({
type: "POST",
url: ""+CI_ROOT+"index.php/admin/check_if_username",
data: ({username: username.val()}),
async: false,
dataType: "json",
success: function(data){
returnUsernameBool(username, data);
}});
}function returnUsernameBool(o, data){
if(data.bool == true){
o.addClass('ui-state-error');
updateTips("Your username must be unique");
alert('false'); //this works
return false; //still can't return bool
}else{
alert('true'); //this works
return true; //still can't return bool
}}
bValid = bValid && checkIfUsername(username);
alert(bValid); //still gives undefined
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Sep 6, 2009
I am trying to set an html attribute after an AJAX call. Works great on the initial tab I can't get it to work on the rest [code]...
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Jan 25, 2011
Is it possible to get a return value from a page call within an ajax call? For example,
$("#new_request").click(function(e){
$.ajax({
url:"_insert_new_request.php",
type:"GET",
[Code]....
Here I make an ajax call from a click on a div. I then call "_insert_new_request.php" page, with a param of "partner_id_link".
Can I return a value from the "_insert_new_request.php"? and how?
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Jul 6, 2010
I am planning to use an AJAX call to a PHP script that accesses a REST servlet. My php script would be very simple; something like:
[Code]..
I'm an experienced programmer, but I'm fairly new to web development, so I am having trouble interpreting this error. What have I done wrong? Is this the proper way to call a PHP script with AJAX?
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Apr 9, 2011
I have a page that creates one unordered list from the contents of another list. The second list is created from a database query and is hidden on the page. I have written a JQuery function shown below that does an AJAX call which causes the hidden list to be created and that is working perfectly. The problem is that when the code following the AJAX call is executed it doesn't see the hidden list. The alert message displays 0 the first time. clicking on the Load button a second time results in the first list being displayed. If I click on the Load button a third time, the previously loaded list is displayed; click on a fourth time and the new list is displayed.
In other words, it takes two cycles to display the correct list. I am at a loss as to what might be the problem. Other than this issue the code does what I need it to do.
$(function() {
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Oct 15, 2010
Strange behaviour: User enters text into textarea - text includes URL with protocol e.g. [URL]. JSON call fails with 403 forbidden. It seems the the serialised content is being interpreted as a cross domain call (my guess). Any other text works - Even if the user enters "http://www.u", but as soon as the input qualifies as a url, I get a 403.
The code extract:
var formText = $("#contributioncontrol").serialize();
$.getJSON('[URL]',formText, function(response) {
if (response.ERROR != true) {
var output = response.HTML;
$(output).hide().prependTo("#results").fadeIn("slow");}
}
If the user enters http://www.url.com in the textarea on the form then The request looks like this: [URL]. The '/' chars in the line above are replaced by% 3 A % 2 F % 2 F (without spaces - Don't know how to stop browser interpreting the encoded stuff).
And the response like this:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access /API/createcontribution.php on this server.</p>
<p>Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.</p>
<hr>
<address>Apache mod_fcgid/2.3.5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.mysite.com Port 80</address>
</body></html>
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Jul 5, 2010
i have a set of select fields, which when selected, send a value via ajax, to return a sub-selection for further choice. I have 3 levels of sub-categories like this. For some reason it works in FF only - not IE. [URl]..
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Feb 16, 2011
I am using an ajax call when clicked on a link... It asks whether you want to continue or not and if you say "ok" then it uses a perl script to delete something from the db.[code]So I was able to call confirm on each of those links and if agreed use an ajax call to a perl script to wipe the user from database. The thing is that I had to usereturn false; in the end of my js call (after ajax) otherwise the link would take me to the script, which I dont want to. I want to remain at main level (to be able to see all users)... Now how do i refresh the page after such deletion? Lets image this scenario:
User clicks on link_to_delete Brad => confirm => he confirms by clicking ok => ajax call to perl script that handles the deletion of Brad => return false (I want to remain at index.pl) => HOW DO I REALOAD INDEX.pl ? I deleted Brad but I can still see him cause the page has old data.
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Nov 16, 2010
I need to append a parameter during an ajax call: I was thinking about something like below:
The problem seems to be with the ajaxSend parameters. It seems that I cannot modify none of them:
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Mar 29, 2011
I'm having problems with jquery and checkboxes..I've been trying and debugging for some time now, but I can't fix it.This is my current code:
[Code]...
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Dec 2, 2010
How know that for ajax call to different domain applies the same domain policy, but is there anyway to get around this using the cluetip plugin?
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Dec 28, 2010
I'm trying to write a modal login script which I borrowed from the SimpleModal site. Unfortunately, I'm running into a very frustrating problem.
When the user types in a valid login/password combo, the PHP function do-login.php echos back "OK". That being said, here's a snippet of my jQuery code:
$.ajax({
type: "POST",
url: "do-login.php",
data: str,
[Code].....
The do-login.php script DOES echo back "OK"- I verified that with Firebug. But even though it echos back "OK", it goes to the 'else' clause.
I tried using return instead of echo but that didn't help either.
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Dec 4, 2010
I'm working on a weather api. A call to an internal PHP page GETs XML and returns JSON. However, I cannot get it to evaluate as an array:
(function($){
$.ajax({
type: "GET",
url: baseUrl + "weather_data/get_forecast",
[Code]....
Firebug (FF 3.5) displays the response in the JSON tagged perfectly parsed, but the code above fails.
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Jan 12, 2011
I use $.getJSON for making an ajax call. This is the code.
$.getJSON("json/",
{cname:$("#customerNameId").val(),email:$("#customerEmailId").val()},
function(data){
alert(data);
});
The data is sent to the server, I also get a response from the server. My firebug shows the response as the value I sent from the server.
But the callback function is not called... The alert never happens
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