Im trying to set request header of my XMLHttpRequest object.
Code:
xhr.setRequestHeader("Content-Type", "text/xml");
and it gives this exception
Quote:
Error: uncaught exception: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIXMLHttpRequest.setRequestHeader]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: http://************ :: process :: line 52" data: no]
I'm writing a web server and an Ajax-y web UI for an embedded system. My server is just plain dumb and quite resource constrained and right now I have code in the server to skip over all the POST header fields. I'd rather not use bandwidth to send them and CPU to skip them. Can I minimize my request header? I was looking to do something like:
req = new xHttpRequest();
for (f in req.header) {
if (f != "Content-Type:') {
req.header[f] = null;
}}
But I haven't found a reliable way to get the header fields. Maybe I haven't looked hard enough. Pointers...?
I want to access the headers of pages I load through ajax. However I don't know how to do this with jQuery First of all, I'm only interested in the headers, not its content, so $('#someID').load("somefile.html") ; is not really what I want. Is there a way I can get the XMLHttpRequest object so I can do xmlDoc.getAllResponseHeaders()
View 2 Replies View RelatedIs it possible to take a url from a text box and request the HTTP Response Header and then document.write() it? I'm envisaging a form into which a user can enter a url and receive the Response Header information. Could I achieve this with JavaScript?
View 1 Replies View RelatedAccording to HTTP/1.1 specs, a client should only have two connections open
to the host at a time (which can be changed by browser users, of course).
When using xmlHttpRequest connections, is there any way to detect that the
request is queued?
I did some tests (see "Queued Requests" at
http://www.ajaxtoolbox.com/request/examples.php ) and it looks like
readyState 1 is fired immediately after the request is made, even though
it's not actually active yet.
Is there anything else I can look at to tell if my request has been queued
and hasn't actually started running yet?
I am developing a mobile web app which communicates with a wcf service that returns data in json format. The way security is handled is the user logins and recieves a token which is added to the http header. The login ajax request which passes the url strings to the service is using https protocol. This works fine. The other 2 ajax requests are also supposed to use https but when I do this the custom header isn't added. If I use http which is the old url, the custom header is added to http header. I have tested this using fiddler2 and firebug and for some reason it doesn't like https in the ajax request url.
function login_service()
{
//$.mobile.pageLoading();
var stringUsername = $('#txtUsername').val();
var stringPassword = $('#txtPassword').val();
[Code]...
I have the following JavaScript (see below). The script requests an XML file from the server and displays it on the page.
The script works fine when the requested XML file is stored on the same server as the script.
The problem is when I try requesting an XML file from an external server such as the National Weather Service. I get an error. If I take the XML file from the National Weather Service and save it to my server it works. Why can't I use my script to request XML files stored on external servers?
Javascript Code
window.onload = initAll;
var xhr = false;
function initAll() {
document.getElementById("makeTextRequest").onclick = getNewFile;
[Code]....
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.
I am having trouble populating elements from the following Yahoo RSS feed: [URL] I need to show the current weather conditions when a button is clicked. Here is what I have so far.
[Code].....
I need to populate the <h1> and two <p> elements. I know that the copyWeatherData() and getWeatherData() functions are not coded properly.
I am trying to create an xmlhttprequest object to update the shopping cart on my web page without submitting the entire page to the server for processing. However, what I have done so far is not working. All that is happening when I click the "update cart" button is the page sort of flashes and the check marks in the remove item check boxes disappear. The first code snippet is the "traditional" way of submitting the whole page to the server for processing - and it works. The second snippet is what I have done to try and implement AJAX to submit only the shopping cart - and it does not work.
<html>
I've created a small AJAX library for our application. We send the response data back as JSON in responseText. So far so good.
Before we invoke the response handler, I'm putting the eval'ed responseText in the request object like so:
Code:
req.respText = eval('(' + req.responseText + ')');
This works in FF but breaks in IE 6. (*gasp*)
I finally got the Microsoft Script Editor yesterday, so I could play with the values and see what was going on. Kind of... I'm still in the dark. For some reason, it won't let me add a property to req. Can anyone explain why/how it prevents me from doing so?
Conceivably I could add the eval'ed responseText to the response handler function, but that would break the API, and would require us to modify a bunch of existing functions.
I am going to use the server push
for streaming the data by keeping the connection open. At client side,
i am having the XMhttprequest object (i.e ActiveX object of IE). When
the data comes, onreadystatechange method get callback on state 3 but
it doesn't allow me to read the data from the object. It says 'The data
necessary to complete this operation is not yet available'. Is it
possible to read the streaming data from the XMLHttprequest object in
IE?
I know Mozilla supports to read the data, when the ready state is 3. In
Internet Explorer, how we can use the XMLhttp Active object to read the
streaming data.
I find ajax with jquery more confusing than with regular JS, b/c in jQuery you don't declare XMLHttpRequest object.. so how do you do something like:
In example I mention here,[url] namely [url] I don't understand where var 'msg' is declared, I know it comes from the back-end, but HOW is it passed to the front-end? (how do you do this w/o responseText or something similar?)
I'm trying to connect to a send-mail jsp with ajax.. the email is not getting sent.. I want to test if the ajax connection is being made at all.. don't know how do it w/o something like xmlHttp.responseText
This is my jQuery ajax code for connecting to send-email jsp:
var dataToSend = "name=sName&email=sEmail&msg=sMsg;
Say I have 2 HTML pages. In page A, I want to display part of page B.(content between a div tag pair with ID in B) Now I was able to use the XMLHttpRequest object to get the complete page B, namely, through the reponseText property of the XMLHttpRequest object. But my goal is only part of page B, not the entire page. I tried to use XML DOM tree node methods to extract the wanted part from page B, but it does not work. I think the problem is that page B is a HTML page, not a XML page. Is there a work around on this?
View 2 Replies View RelatedI am making a HTML form which will take elements passed from the server. I cant get it to display correctly.
<html><head>
<script type = "text/javascript">
var dict = new Object;
[code]....
I stumbled upon a strange behaviour of the XMLHttpRequest.. Maybe I'm
just not well informed enough about its possibilities, so could someone
please confirm my question?
When I put plain javscript in a file that is read-in through a
XMLHttpRequest-object, it's like it is totally ignored. Eg. I have the
file ajax_include.html with in it's body the following lines
<script type="text/javascript" language="javascript">
alert('some alert');
</script>
when I directly surf to the file, the alert pops up as expected, but
when I use a simple XMLHttpRequest to replace the contents of a div
with the contents of this page, the alert is not popping up, although
when I view the selection's source (Thank you, Firefox!), it is there!
When I place an anchor with an onclick-action (eg. alert('onclick')),
it works when I click it.
So my "conclusion" is that it seems like inline javascript commands are
ignored (functions not recognized etc.). All actions assigned to other
events work nice though.
Can someone confirm this strange behaviour? Or is it just normal with
the use of an XMLHttpRequest opbject?
I am submitting a form using ajaxSubmit and trying to read back the status code.For a error case it is showing HTTP Status 404 in responseText but not xhr.status is undefined.If i use complete callback then xhr.status 0 So how to handle case when there is some error like 404..[code]
View 2 Replies View RelatedMy requirement is like this,we have 2 text fields called name
and number and one button named submit.when ever we click the submit
button then we need to store the page information(form values) into our
database and need to post this form values to some other site
(eg:action="google.com/signup.aspx"). How to do this in asp.net please
send me the code.
I'm try to create an XMLHttpRequest object but getting a syntax error with this code:
var XMLHttpRequest;
try{
XMLHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
}
syntax error: missing } XML expression (on column 56)
I am working on a website that uses a random header. I have been trying to figure out how to adjust the code so that the header also serves as a clickable link.
Here is the code that I have:
What do I need to add in order for the header to also serve as a link? I am completely new to JavaScript and I don't understand it very well.
I worked with now in jQuery. Property however at present the following problem: [i]I provide a AJAX Request. the side is loaded, the parameters all conveyed and back receives I a complete HTML side. Now I would like to have only certain elements however from this side, like DIV, SPAN etc. How can I make with the AJAX Request return in such a way best, which I can select these elements thereby? Simply it would be unfortunately not functioned over the function $ (element), it even if I indicate the HTML Request as secondly parameter.[/i] Excused, for my bad English. ;-) Translatertool. There is unfortunately too many words, in order to describe my problem. ^^
View 2 Replies View RelatedI have a php page which returns a table representing a query sent to a MySQL database. So far it has worked in every case except now that I'm trying to use it to call a stored procedure, in which case the readystate is staying at 1 and never completing.
I have logged the results of the php file both in an error log and looked at the response from the request using firebug, both of which show a correct result.
Why isn't this returning properly?
Here are the relevant javascript functions:
Code:
function customizeType()
{
$("custom-header").innerHTML = "";
$("custom-top").innerHTML = "";
[Code]....
After the page loads, the error log shows correct results for all queries.
when I load a new page with location.href, ie doesn't set the http
referer header while firefox&mozilla does...
I tried the click() method on a hidden link, this times it works on ie,
but firefox says that click is not a function
[...
<a id="ref" href.......>...</a>
....
document.getElementById("ref").click();
....]
Is there any method which I can set this header manualy or make ie set
it properly? Or any other idea?
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.
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]...
I have a situation where I'm currently using Basic authentication (the
server issues a 401, the client pops up its window, etc., etc.).
Instead of having the server send out a 401, I would like to send out
my own page that would create the proper header field for all
subsequent requests from that client. Can such be done with JS? Can
someone point me to an example?
I do not need encoding. This is on an intranet and the authentication
is being used mainly to return different information to different
users as opposed to trying to keep out the "bad guys".