JQuery :: Process Several Asynchronous Http Requests At Once?
Mar 3, 2010
Can I do the following without my program crashing? [code]...
I have created an application that does something similar to the code I just posted. However, my program crashes intermittently. Sometimes it will crash after calling jQuery.get() a few times (with several http requests still pending). Other times it will get through all of them just fine.
I want to know if Ajax can handle that many asynchronous requests without crashing? Can someone look at this to see if there is something I am missing?
Say I wrote an ajax script to send out HTTP requests via ajax. Any cookies that I have associated with that site will be sent along with this HTTP request. Is there a way to prevent this from happening? I tried the following to no avail:
I'd like to make an HTTP request using JavaScript but not with the XMLHttpRequest object. I'm attempting to make this request to a different domain to get information and the security of modern browsers won't allow this with the XMLHttpRequest object.
Is there another way to do this in JavaScript? Oh and I'm not taking advantage of the asynchronous nature that object either, so that's not a criteria for a potential solution.
I'm doing some data processing and I need to pull data out of html snippets. Works fine, but when I load in the html it's wanting to make a bunch of secondary http request for resource files, images, css, etc. which slowes the process down. My loads go from 40b to 350b. is there a way to prevent the browser, or jquery or javascript, or whatever is forcing the load of these assets to just knock it off?
this may be more of an "html" issue, but I'll wing it.
i've got a multi-language site, where the home-page of each language group features a link to a popup window that offers background info on site management. the popup is fired by a javascript function, when they click the site management link. there's also a "window close" function button so they can nuke it as they please.
now, oddly, people who search for my site in the chinese language on google, are sent directly to the site management popup window, which of course, opens in their "full" browser window, and which also has no links back to the main site, because it's meant to open only as an "accessory" to the main site.
my question is this: is there any way, with Javascript, that I could determine if they arrived at this window from "off-site" (ie, a google search), and therefore offer such "off-site" visitors a link back to the principal site, a link that would be hidden for visitors who clicked the popup window from my own site?
I'm having (once again) tremendous problems with IE (7), trying to create an application that behaves properly.
This time, it's with Ajax calls triggered by a button click, which do not behave asynchronously.
Here is the highlight of what I'm trying to achieve: a button clicked sends an ajax call to the server whilst the call is made and until the callback function has returned (or an error has been identified), a "wait" animation is triggered. (in the case below, simulated by appending a status in a div)
To achieve this, I decide to use .ajaxStart(), .ajaxStop() and .ajaxError() to trigger the wait animation. It works perfectly in FF and Chrome, but (as usual) not in IE. In IE, when I press the button, the button remains depressed until the ajax call is finished, and then all statuses are dumped at once onto screen. Not very asynchronous...
Here is my code:
If I uncomment line 11 and uncomment the alert, it seems that this forces IE to do things in the proper order. Obviously that's not a solution however...
Will I have to (once again) write IE-specific code to get things working properly?
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..
Im trying to use jquery to try to do what the image shows: Its for a website made for iphone so im trying to add the slide effect. It all seems a little complicated, but ill explain: 1-The user clicks a link 2-A loading message (or image) appears Meanwhile, the new page loads on a hidden side (its a FULL page, not just a div)
I am building a library of functions which call this function, so I cannot have the data processing done within the success function, I need to extract the data itself.
I have some trouble with my app. User enters his login&pass, they are being checked on server using ajax, and if they're ok, i wanna open new page, which'll set cookies and session vars, but i have an universal script, and I need request something like universalScript?mode=login (mode is GET) and some POST parameters such as login and pass, besides it must be new page, not ajax, Some ideas?
I want to send another ajax request when one request is in process to get the status of first request. If I call both the request the second request gets blocked till the completion of the first request.
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?
I am using AJAX and coldfusion, and am having trouble getting some alerts to work. I am using the http object in javascript: var url="add_item.cfm" oXmlHttpadditem=GetHttpObject(addStateChanged); oXmlHttpadditem.open("GET",url,true); oXmlHttpadditem.send(null);
then, in add_item.cfm, I am just using: <script type="text/javascript">window.alert("Hello World ");</script>
but the alert isn't being displayed. I assume this has to do with client-side/server-side issues, but can someone please clarify why this doesn't work, and perhaps offer a fix or alternative solution?
I'm using jQuery Validate to validate my on-line things.it looks like a plugin issue, but my turn-arround was on ajax/param not on the plugin, so i put it on core.Today i faced a problem, that is: i use remote validation and i needed that all the form is submited to the validation. (this remote validation is like a bridge to the $.ajax)i have tried this, and of it is not the best deal, because it get the form on ready and don't change when the form change:
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:
I was wondering if the jquery out of the box allows for repeated ajax requests at a certain time interval to update elements on the page. I found a plug in that can do this:Just wanted to make sire i can ot inherently do it with jquery.
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.
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.
I think it's okay to ask this question in this group, but if not please point me to the correct one!
How does one go about doing asynchronous updates between two web clients? Take Google Chat for example... how does Google Chat update a chatter's chat window with text entered by the other chatter?
I have a form with a textarea that can hold a lot of values. When submitted, a php-script takes over and processes the textarea line by line. When a lot of values is submitted, it can be time-consuming for the php-script, causing the webserver to timeout.
I would like jquery/ajax to send one or a few lines of the textarea to the php-script at a time, hence feeding the php-script with a lot of smaller requests instead of one massive one. Kind of like an upload form with a progress bar, but for textarea values instead of file submition.
I have looked around and failed to find any examples or tutorials on this, and since I'm not very experienced in javascript I would really need it.
So again, the javascript would check the textarea-field when user submits the form, and send one or five values from the field at a time to a remote php-script. In the meantime the user can be presented with a "loading..."-image or a progress bar.
Based on a simple AJAX way, I can run a php process and return the result by this line Code: xmlhttp.open("GET","getuser.php?q="+str,true); There is another method using jQuery (e.g. in [URL]). But here, it shows a predefined message in these lines
Code: //hide the form $('.form').fadeOut('slow'); //show the success message $('.done').fadeIn('slow'
How I can return the output of the php script within AJAX instead of this message?
