JQuery :: Uniquely Identifying Ajax Requests / Responses?
Jul 23, 2010
I am developing a fairly complicated application with a lot of JavaScript and making use of JQuery. The application repeatedly makes simultaneous GET requests.
I am looking for a way of assigning a unique token to each request when it is made, so that I can store information about that request and cache the request / response combo, when using $.get() (or potentially $.ajax() if required for the extra functionality).
So far I have not had any joy and after a while googling this am none the wiser. I have used similar functionality in Flex 3 with the AsyncToken object which can maintain data between HTTP request / response.
[Code]...
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Jul 12, 2011
I need to encrypt my AJAX requests and responses from the server. As the message format I use simple JSON.Can you advise any libraries about it?
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Apr 8, 2010
I have an application running on a non-interactive kiosk that I need to keep updated with information that will be provided by a remote server. To do this, I've created an XMLHttpRequest/Microsoft.XMLHTTP object that checks the modified date in the header of a watched file that resides on a remote server.
This function runs on an interval, and if it detects a change in the modified date since the last check, it retrieves new information from the remote server.
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Apr 14, 2006
Is it possible for an AJAX request to be left open for multiple responses? This could avoid repetitive polling of the server.
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May 14, 2009
It looks like IE is caching the response for some AJAX requests here. The app I'm working on is a catalog of sorts. Clicking the link for a category loads a set of "items". Those, in turn, may be deleted from the admin view. The delete works fine (I checked the DB) but, when loading the same set of category items, I'm seeing the list unchanged. That is, the thing that was deleted is still there. Sorry for the crap explanation but I'm not really sure of a better way of putting it. Bottom line is, has anyone seen this sort of behavior with IE before? Can it cache the result of an AJAX request like that? And, if so, how can I guard against that? Can I set cache-control headers for an AJAX request?
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Apr 29, 2009
Very intermittently, I am finding ajax requests submitted with jquery are being submitted twice, once with parameters, and once without parameters. The code looks something like this:
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Feb 12, 2010
I'm trying to launch two ajax requests at same time. I'm expecting result from the first later than the second. The problem is, it won't return me any result from the second request untill first one is returned.
Check it out :
$.post("sendMail.php");
getSendInfo();
setTimeout(getSendInfo,5000);
[code]....
I'm getting response from the $.getJSON function only when the $.post is over. Is this a bug or a mistake from me ? My aim is to launch a long request and fire multiple other requests to check how is doing the first one.
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Oct 25, 2010
I'm having problems performing a simple load(...) request to bring in HTML content from a partner Oracle system within the same domain. Our portal has a built-in SO connection will handles security for me transparently. However during the process it initiates a 302 temporarily moved response which seems to trip up an AJAX request, but doesn't trip up Firefox when accessed through the address bar. If I use the same URL in an IFRAME it's totally fine.
After tons of googling, searching the forums, and the bug tracker database I cannot find anyone who has experienced this problem. Before I open a bug ticket I'd like community feedback to help me see if I am doing anything wrong.
My AJAX call looks like this in Javascript:
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Mar 26, 2010
I have a element when click, it will trigger some other elements to be selected. and those elements will trigger elements in next level.
It is a three levels hierarchy so to speak. but each element will send an ajax request when selected. Those requests will become out of control especially when I repeatedly click the root element.
Can I queue those XHR request in a queue and send them one by one? or maybe add a delay before send so that they can collect their information into one batch request and send one request after that.
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May 11, 2011
I have a page that relies on AJAX for content manipulation. Once a person selects a radio button, a request is made through $.getJSON() to get the replacement content. This works in all browsers. Once the new content is loaded, there are 3 more calls to $.getJSON() to change more content (on other tabs in jQuery UI). This works in all browsers except for IE.
I understand this is a Microsoft problem, and not a jQuery problem, but I am wondering if there is a way to manipulate the jQuery calls to get them to work in IE. I did try replacing $.getJSON with $.ajax, and even set async to false. None of those three methods worked in IE. I noticed the problem when my loading div was still displayed in IE. Using Firebug Lite, I saw that only one request was made, rather than four.
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Jan 29, 2011
I'm working on a php/jQuery application, I want to display a loading image automatically every ajax request, without writing code for every ajax request. Is there anyway to do this.
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Oct 3, 2011
When a pending ajax request is aborted in IE browsers there is a new global object called "jQuery" + timestamp, for example "jQuery16405272192696596443".
This happens in every IE from 6 to 9 but not in Chrome, Safari, FireFox in their current stable versions. I am a bit lost and found nothing similar. I created a little test page to determine whether it started due to some own code or just in this little piece.
Example HTML:
<!DOCTYPE html>
<html>
<head>
[Code].....
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May 6, 2010
I have a problem where if a form submission (set up to submit via AJAX) fails validation, the next time the form is submitted, it doubles the number of post requests - which is definitely not what I want to happen. I'm using the jQuery ValidationEngine plugin to submit forms and bind validation messages to my fields. This is my code below. I think my problem is that I need to unbind from the validationEngine plugin when the form fails, but I can't figure out how to do this.
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Jan 12, 2009
I have this function among many that houses forms. I'm also using an ajax page that is supposed to deal with form's entries and insert everything into my DB and I don't know how to separate the different requests on the ajax page so that it can do what the correct request is.
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May 15, 2011
This might seem like a silly question..First issue. If i have a response and i'd like to update both text div and a status div how would i go about doing this. I've seen that jQuery has a few options such as OnSuccess etc?
Say that i post a comment and obviously you'd want to update some kinda statusbar on your website with the info that the message was posted successfully with ajax. (otherwise it might slip by the user unnoticed since ajax is kinda discrete)
Would it be a good way to for instance check the responseText if it contains anything and if it does you simply write a successmessage by grabbing a div from JS and if the responseText contains a custom error code lets say 1 you'll update the statusbar with a deny message?
Second thing. I've currently created an Ajax search on my site which activates whenever the user press or unleash the button. The issue is that if the user types fast enough it comes stuck showing the Loading.gif constantly. Could this be due so many requests opening and that i have a sleep on the server-side and if so how would you do it instead? I am using a serversleep of 1 second to have the Ajax pic appear consistently.
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Aug 19, 2011
I have a jsp page using ajax that has a button with an action. The action sends multiple ajax requests. The response from these requests is to be used to update a progress indicator to show the servers current progress. I can see from the debug that I am getting the 1st response. I think it is the way how I have implemented the further requests. I think this is down to my javascript knowledge, which isnt very much. Also I assume using multiple requests in this way is the correct thing to do? I have spent ages trawling the internet trying to get a solution.
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Apr 18, 2011
I'm encountering an AJAX problem when I try to execute multiple AJAX requests at the same time. What I want to do is delete a message and display the status (succes or failure) of that in div1, and refresh the messages on the page in div2. This needs (for as far as my knowledge reaches) two AJAX actions from which I both need the responseText.
The problem:
What happens when I execute my script is that the second action (refresh a part of the page) happens before the deletion is executed. The result of this is that when the deletion has been executed, the page is already updated, and the deleted message is still there.
The script
What I now have is:
function doAjax(url, element_id, img_url){
var ajaxObject = createAjaxObject();
ajaxObject.open('GET', url, true);
ajaxObject.onreadystatechange = function(){
if(ajaxObject.readyState==4 && ajaxObject.status==200){
document.getElementById(element_id).innerHTML = ajaxObject.responseText;
delete ajaxObject; .....
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Mar 18, 2009
I need to send 15 requests to my server and get results, these results are queries to other sites. I then update my page with the results. I need to know if I am taking the correct approach, as things are working a bit slow, and i.e., seems the be as slow as a snail.
Here is my function for the first request
Code:
function one(){
var xmlHttpa=null;
try{
xmlHttpa=new XMLHttpRequest();
} catch (e){
try {
xmlHttpa=new ActiveXObject("Msxml2.XMLHTTP");
} catch (e){
try {
xmlHttpa=new ActiveXObject("Microsoft.XMLHTTP");
} catch (e) {
alert("Your browser does not support AJAX!");
return false;
}}}
xmlHttpa.onreadystatechange=function(){
if(xmlHttpa.readyState==4){
document.getElementById('resulta').innerHTML = xmlHttpa.responseText;
var el = document.getElementById('showMessagea');
el.parentNode.removeChild(el);
applystyle();
}}
xmlHttpa.open("GET","one.php",true);
xmlHttpa.send(null);
}
I then call this function and others from my page, one(); two(); etc. Am I correct in my approach?
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Dec 15, 2005
I have a div that is identified by a class name of .thumbs, and Inside this div are numerous thumnail images.
I was hoping to be able to click on any one of the images and pass back information, such as image src, to a function for some type of processing. The problem is that there are many thumbails and adding an id to each would be very arduous and not very dynamic.
I'm having a hard time wrapping my head around the logic needed to solve this problem.
Does anyone have any ideas?
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Jun 29, 2009
<html>
<body>
I have a function, triggered when a particular type of link is clicked,which collects and inserts some text after the parent of the clicked link. This function works fine when the parent is a p tag, but I'm having trouble when the link is within a list tag. In this instance I would want the new text to be presented after the closing list item tag. How do can I distinguish whether the clicked link is within a p tag or within an li tag?
<tt>function fnGetSnippet(ni){
$.get("../scripts/ajax_fsheets.asp?id=getDD&ddID=" + ni +
"&q=" + new Date().getTime(), function(responseText){
<x-tab></x-tab>
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Feb 3, 2011
I'm new to js and jquery. I need to get access to select forms which are named dynamically. I have no problem when named statically, so this works fine:
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May 10, 2011
I am trying to pass an argument to a function to process server responses. My original line of code looked like this: [url]
This works well enough as is, but I am trying to pass arguments to the function, and everything I am reading says to contruct the code like this: [url]
Every example I have come across uses this same approach, but I keep getting the error "Expected ';'" pointing to this line and then the code fails to execute. I just cannot see where there is anything missing, and it looks pretty much identical to my examples.
I have also tried replacing the call to the function with the actual code in long-form, and the result is the same.
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Sep 12, 2011
I have a list of checkboxes with Ids that go something like;
chk_AGE=16
chk_AGE=17
chk_AGE=18
[code].....
When a user checks/unchecks '16' (for example), I want javascript to look up how many checkboxes in my form have an Id that begins with "chk_AGE" and return the number in an alert box ("3" in this case).If my user had checked/unchecked "Officer" an alert box would return "2" as there are 2 checkboxes that begin "chk_RANK".
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Feb 14, 2006
How would I adapt it to change the outcome? I don't want to limit access to the webpage. I do want to take the incoming referral URLs and put them in a text file for my review? I think this could help me solve a problem at my website where I want to identify the source of an extraordinary number of referals to a particular page. Code:
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Aug 11, 2006
If you have a collection of submit buttons on one page, and an OnSubmit event fired on the Form, how can you find out the ID of the button clicked, triggering the form submit? Code:
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Oct 21, 2010
Its like xyz.com/index.html is hosted under us and it can be edited by many people. Some spammers edit the above index.html to javascript redirect to abc.com. I want to figure out this pages in my site xyz.com .Is there any way to track the abc.com domain on unload of the page xyz.com . Please let me know if you need any more information.
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