Detecting A 302 Redirect To An XmlHttpRequest Call?
Jul 20, 2006
I'd like to be able to detect whether the browser is receiving an HTTP
status 302 redirect when handling the response to an Ajax call. I can
see the 302 status code clearly with LiveHTTPHeaders in Firefox, but
every time the XmlHttpRequest onreadystatechange handler is called, the
status property is éU'. It seems like the 302 is being handled by the
browser somewhere upstream of my JavaScript.
(I know that this has been asked once before -- that I've found -- in
this group, but it seems like the only response misunderstood the
question.)
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Mar 20, 2006
According to HTTP/1.1 specs, a client should only have two connections open
to the host at a time (which can be changed by browser users, of course).
When using xmlHttpRequest connections, is there any way to detect that the
request is queued?
I did some tests (see "Queued Requests" at
http://www.ajaxtoolbox.com/request/examples.php ) and it looks like
readyState 1 is fired immediately after the request is made, even though
it's not actually active yet.
Is there anything else I can look at to tell if my request has been queued
and hasn't actually started running yet?
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Oct 29, 2011
I'm trying to create a script that will call a flickr rest method and output its XML. I have written the following code, but it seems to not work. I am stumped, and was wondering what I am doing wrong. I have uploaded my code to [URL]
[Code]...
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Aug 20, 2010
Here's my problem code:
document.onclick=handler;
function handler(e) {
//do stuff
var params = "something";
var request = new XMLHttpRequest();
request.open("GET", "http://www.foo.com/bar.php?" + params, true);
[Code]....
Now is user clicks something else but not a link everything works just fine. But if she clicks a link, the bar.php call does not work (never comes to the server). If I change the call to a synchronuous one request.open("GET", [URL] false) also clicking a link works fine. But I would of course prefer the async way.
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Apr 6, 2009
I have a link in one page and want after click to be redirected to other one and call javascript function from the second page. How to do this? I've tried with setTimeout() but doesn't work for/because of :)
[Code]...
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Feb 27, 2006
Does anyone know is it possible to check if ajax call was redirect? i mean I connect by Ajax to one URL but I'm redirected to other url. Is there a way to check that my request was redirected? this situation happen when some urls are only accesible when you are logged (i mean you have session) and if you losed session you are usually redirect to other page. But I don't know is it possible to check that my call was redirect. For now wheatever my AJAX call was redirect or not i get status 200 (it's OK)...
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Jun 6, 2009
Im looking for a simple code to redirect to a specific URL on any click on page and redirect to certain url after a certain number of page views.
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Oct 7, 2009
javascript:history.go(-2) makes it go two pages back for links but how do u put it in the script tags just when the page loads go back 2 pages?
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Apr 19, 2010
I have a javascript that I found for an iphone style menu. It works and allows me to click through the menu as long as it is within the list system. If I try to create an external link to a webpage. It doesn't load anything. Here is the code let me know if anyone knows the trick so I can link out. Below is the javascript used to create the flowing menu system. Let me know if you need the rest of the .css and html.
(function() {
var animateX = -20;
var animateInterval = 24;
var currentPage = null;
var currentDialog = null;
var currentWidth = 0;
var currentHash = location.hash;
var hashPrefix = "#_";
var pageHistory = [];
[Code]...
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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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Mar 13, 2005
Yesterday I started rewriting the xmlhttprequest functions to an oo equivalent, but as it turns out, I don't get it right:
Code:
function Request()
{
this.req=init();
this.req.onreadystatechange = this.processedRequest;
//addEventHandler/attachEvent alternative
//doesn't work either
function init()
{
try
{
if(window.XMLHttpRequest)
return new XMLHttpRequest();
else
return new ActiveXObject("Microsoft.XMLHTTP");
}
catch(e)
{
alert(e);
}
}
}
Request.prototype.send=function(url)
{
this.req.open("GET", url, true);
this.req.send(null);
}
Request.prototype.processedRequest=function()
{
if (this.req.readyState == 4)
{
if(this.req.status == 200)
{
response=this.responseXML;
res=response.getElementsByTagName('result')[0].firstChild.data;
func=response.getElementsByTagName('feedTo')[0].firstChild.data;
eval(func+'('+result+')');
}
else
{
alert(this.req.statusText);
}
}
}
expected usage:
Code:
var x=new Request();
x.send(url); //the processing function
//the eventtrigger should activate the callback function
//when the xml has been returned
It seems like the problem is that I don't get to my "this.req" in the processedRequest function. Can anyone see where the problem lies, it has been turning me crazy all weekend already.
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Jul 6, 2010
1. - I am new to this
2. - Using the following .js file:
Code:
function makeObject(){
var x;
if (window.ActiveXObject) {
x = new ActiveXObject("Microsoft.XMLHTTP");
}else if (window.XMLHttpRequest) {
x = new XMLHttpRequest();
}
[Code]...
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Jul 20, 2005
I'm trying to use JS to move the cursor from my user login text field
to the password text field - I've put the onKeyPress() event in the
user input tag but then I press the Tab key the cursor doesn't move -
function detect_tab_key()
{
var key_code = window.event.keyCode;
if (key_code == 9)
{
document.forms[0].frm_password.focus();
document.forms[0].frm_password.select();
}
}
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Sep 12, 2005
Ive been playing around with xmlHTTPRequest and was wondering if i was
programming a part of my code wrong.
what i want to do is have the browser access another part of my site
using xmlhttprequest.
however, when i use xmlhttp.open("POST",
'http://xml.mysite.com/test.php')
it fails, but if i use xmlhttp.open("POST",
'http://www.mysite.com/test.php') it works. Is access to another url
restricted in xmlhttp?
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Dec 29, 2005
I have something like this:
var xmlDoc=document.implementation.createDocument("", "", null);
but in opera xmlDoc.load(...) won't work, so I use:
XMLHttpRequest, and I have all needed code... let's say it works...
So I got serviceRequest.responseXML and is there a way to initialize xmlDoc
in my case ? I am asking because I have code that uses xmlDoc.load(...) in
FF and all code that's need to futher work with XML written. So this would
be comfortable for me to use xmlDoc instead of creating everything from
start.
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Feb 25, 2006
I'm fetching some HTML files with XMLHttpRequest and dumping the
ResponseText into block elements; works fine except that single and double
quotes are being displayed as question marks (inside of a black diamond in
FireFox)
What's going on ? What is the workaround ? I've tried this:
divElement.innerHTML = x.responseText.replace(/?/g, "'")
but it does nothing ... even if it did work it would not be distinguishing "
from '
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Jan 19, 2007
I would like to use the xmlhttprequest-object to send an http request
to my server. The http request is used to switch the light on through
home automation.
However it's not working, and I can't find the problem.
Could it be that the apache-server is located on 192.168.0.21 and that
the http request is sent to 192.168.0.21:8080?
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Apr 24, 2005
function XML_request(func) {
var onreadystatechange= func;
this.method = "GET";
this.get = function(url) {
var request = null;
var state_change = function() {
if (request.readyState==4) {
if (request.status==200) {
onreadystatechange(request);
} else {
return null;
}
}
}
try {
request = new XMLHttpRequest();
} catch(e) {
try {
request = new ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {
return null;
}
}
if (request===null) {
return null;
}
request.onreadystatechange = state_change;
request.open(this.method, url, true);
request.send(null);
}
}
var req = new XML_request(function(response) {
response = response.responseXML
alert(response.getElementsByTagName('blah')[0].firstChild.data);
});
req.get('index.php?mode=blah&a=response')
i didn't like the examples I found so this is suitable.. I only tested in ie and firefox though.. so let me know what I may be missing.. or criticism in general.
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Oct 26, 2005
I'm working on an application that uses ajax and we are going to have a version that people with browsers that don't support the XmlHttpRequest object. My problem is what's the best way to check this.
I have tried the following
var xmlreq = new new XMLHttpRequest();
if (!xmlreq){
// handle the browser stuff
}
In netscape 4.7 this results in an error that I don't seem to be able to recover from and I don't think this is the best approach to this problem.
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Sep 11, 2011
While accessing my web service i am getting XMLHttpRequest status=0 in Crome/Mozilla and in IE getting XMLHttpRequest status=406. What is the solution for it so that i will successfully get responseText from server? I have tried accessing my html code with localhost but its getting same error,while when i run my code in that localhost location through local drive then it's working. why this is happning i didn't get?
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Feb 3, 2010
I got a javascript function to pull contents from a php page, let's call this page B to the actual page, let's call this page A.
As I know when a page gets loaded the javascript on that page won't execute, am I right?
Now I need the javascript code on that page B to get executed. Is that somehow possible?
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May 21, 2006
I'm loading a javascript within a webpage on domain A from domain B like this:
Code:
<script type="text/javascript" language="JavaScript" src="http://domainB/path"></script>
Works perfectly, the script loads and executes. But calling XMLHttpRequest.open accessing Domain B from within this script doesn't work: Permission denied.
Now, I know of the cross domain security rule, but why can I load a script from Domain B, but not make a request with XMLHttpRequest to Domain B? Alle the counter scripts do exactly this... Any advice?
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Dec 12, 2006
I'm using Firefox 1.5 and FCKEditor in a CMS app. Everything works in older versions of Firefox but in 1.5 I get a javascript error saying that the XML file holding the styles can't be loaded. Here is the code where the xml request is made:Code:
FCKXml.prototype.LoadUrl = function( urlToCall )
{
var oFCKXml = this ;
var oXmlHttp = FCKTools.CreateXmlObject( 'XmlHttp' ) ;
oXmlHttp.open( "GET", urlToCall, false ) ;
oXmlHttp.send( null ) ;
if ( oXmlHttp.status == 200 )
this.DOMDocument = oXmlHttp.responseXML ;
else if ( oXmlHttp.status == 0 && oXmlHttp.readyState == 4 )
this.DOMDocument = oXmlHttp.responseXML ;
else
alert( 'Error loading "' + urlToCall + '"' ) ;
}
Everything works in IE but Firefox just gives the error that is set in the final else. Any ideas on how to debug further or fix (preferrably fix).
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Feb 22, 2010
The code I am writing fetches a csv file with weather data and updates the contents of the page every 5 seconds. It works correctly as far as I can tell in Firefox, IE, and Chrome. In Safari it works correctly the first time it loads but gives the following error any time after that.
Error: NETWORK_ERR: XMLHttpRequest Exception 101 I've searched for this but couldn't find anything that seemed to be similar to the issue I'm having. The error occurs on the xmlhttp.send(null); line.
Code:
function getFile(url)
{
var file_url = url + '?t=' + ((new Date()).valueOf());
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
[Code]...
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Jun 26, 2009
I would to change the color of some td cells if there is text in it. Right now this code does the job, but it changes the color of evry table. I'd like to know a way to do this on one table in my page and not all of them.
var count='0';
var TDs=document.getElementsByTagName('td')
var length=TDs.length;
i='0';
[Code]....
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