AJAX .. Both XmlHttp Objects Say Undefined?
Jan 6, 2010
In firefox, i look through the DOM and its showing me that both xmlHttpRequest and ActiveXObject("Microsoft.XMLHTTP") are undefined.Also if one could check the ready state methods I used, I'm not 100% if they are correct eg. xhttp.onreadystatechange = loadBlurbs() and if null is the value for a failed loading procedure.lasty, can I do this processBlurbs() = getElementByTagName, and then, processBlurbs() { this.length, this.child etc. ? }
Code:
<script type="text/javascript" language="javascript">
var blurbdoc;
var blurbs;[code].......
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Feb 23, 2007
I've been working on a tutorial for AJAX and i keep getting this message and cannot locate the source problem. Anyone give me any pointers? Code:
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Jul 23, 2005
I don't know enough about the technology yet to know whether this is a ridiculous question-- but is there no cross-browser javascript implementation of XMLHTTP and SOAP for use in calling web services?
It looks as though MSFT expects the client to be running Windows and ActiveX and have certain DLLs installed; and Mozilla seems to have its own implementation of SOAP. Is it
possible to implement these protocols in pure client-side javascript?
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Jul 20, 2005
I'm trying to make use of XMLHTTP object, but I've come across a problem. It seems that there is no way to create dynamic array of such XMLHTTP objects (to make several requests) and handle them properly. I was trying to use such code:
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Mar 27, 2006
I am trying to use AJAX and JSON to do this. I have copied an example of
using HttpRequest Object as the backbone of this from
http://www.w3schools.com/dom/dom_http.asp. Further, I am enclosing both of
my files here, in full as opposed to mere snippets. This code does what I
wish it to do except:
1. It does not update when getdata.php is rewritten. On non MSIE broswers,
it shows when first invoked, but not subsequently.
2. It fails altogether under MSIE (6.026 SP1 || SP2) -- I never get
xmlhttp.readyState==4 under MSIE.
Code:
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Mar 6, 2011
i want an argument that will ask if the previous xmlhttp content was = to the current xmlhttp content. Like as so:
Code:
if(oldxmlhttp = xmlhttp) {
alert("yes");
} else {
[Code]....
All in all i want to make it so it doesn't reload if content is not different. To hold control over the server.
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Jun 9, 2011
I've been racking my brain for a couple hours now and doing a lot of searching and I cannot seem to find an answer. I want to know if it is possible to return the xmlhttp.responseText value from an AJAX function to the function that originally called the AJAX function.
Code:
//Set handler for server response.
xmlhttp.onreadystatechange = function()
{
[Code]....
I want to return the my_response variable to the original caller. No matter what I try I have been unsuccessful. I even tried assigning it to the global window variable using window.my_response = xmlhttp.responseText but it ends up being undefined.
Every example I've seen of using AJAX pretty much does something inside of the if (xmlhttp.status == 200) part to update the web page. I really do not want to do that.
Can I return the value?
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Oct 31, 2006
Can someone explain to me the difference in the book and the sample code? I am not an expert in javascript, but I am an experienced programmer in C++ (Borland) and other programming languages (mainly CVI which does not support OOP).
The book uses try and catch statements to init the XMLHTTPRequest object, but the sample code uses what looks like (to me) an array of functions. Can someone please explain the sample code? It is probably straightforward to a javascript programmer, and I can see what is happeneing, but I have never seen the square brackets construct before. Code:
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Nov 24, 2009
This piece of code is used for an AJAX function, it works perfectly well in all other browsers than internet explorer.
// JavaScript Document
// store xmlhttp in a variable
var xmlHttp;
function xmlHttpRequestObject () {
// assume we're working with a newer browser
try {
xmlHttp = new XMLHttpRequest();
}
catch(e) {
// assume IE6 or older
try {
xmlHttp = new activeXObject("Microsoft.XMLHTTP");
}
catch(e) { }
} .....
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Mar 4, 2009
I have been trying to figure this out for a few days now and have finally come to the point where I think I got it but may just need a little push to get what I want.
Heres the situation:
I have this function that uses ajax to access a database and returns the results in the responseText. That part is working fine, I have confirmed that the responseText contains the information that I need
**************code*****************************************
//new ajax already created and assigned to the variable xmlhttp//
var response_recieved = "some data";
function get_answer(Table_Name, Field_Name, Data_Type) {
[Code]....
As evidence by my posting, this is not working correctly. The variable response_recieved is coming up undefined outside of the callback function assigned to the onreadystatechangeproperty.
Based on the information that I have gathered online from various forums, I believe this issue has to deal with a problem with closure in the callback function assigned to onreadystatechange property. I don't think it has any. Based on the fact that there is no anonymous function in that function. But my problem is that the call back function is anonymous itself... I think???
get the variable response_recieved to survive outside of this function.
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Sep 12, 2011
I can not for the life of me get an ajax example/tutorial to work. I have tried dozens including prototype library and JQuery.
Here is my latest attempt:
As you can see I am trying to alert the variable teamH but I keep getting an undefined in the alert. I also tried a static drop down and I received the same undefined alert.
How I get that variable to contain my drop down choice?
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Jan 14, 2010
I am trying to fix up some code and have run into a problem. For some reason the line of code
Code:
var sizeQ = gid("q" + aq).length;
is not assigning a value when the page is loaded in firefox but in IE it works perfectly.
Code:
function testAnswers(aqNow,review,toClose){
//alert("inside test answers");
var listQa = gid("listQuestions").value;
[code]...
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Apr 10, 2011
I'm have some javascript objects with arrays that should be transferred as php array.Its posted by ajax httpRequest.How can I return php array, from the javascript?
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May 5, 2009
I need suggestion for this.After a particular option selection in my page,how to replace the rest of the contents of the same page with its response,and too making the select action invisible... can i do it using ajax wit html. for example,i have a select option,where for each option is attached a new set of objects,i want them to be loaded on the same page at run time,without page refresh...
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Oct 12, 2009
I have what I think is a simple $.ajax() call.I added complete and error functions but a time out in firefox 3.5.2 doesn't cause the error function to be called and when the complete function is called both parameters are undefined.If I make the ajax call return a http 500 response the error function is called.[code]Running on FF 3.5.2, JQuery 1.6.2 on XP Pro.
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Aug 15, 2009
I'm new to ajax. I've made a script that should return results from database but it keeps telling me just undefined. Code what I have:
Code:
var ajax = null;
function showRes(wut) {
if(wut.length == 0) {
document.getElementById("results").innerHTML = "";
return;
} if(window.XMLHttpRequest) {
// IE7+, ff, chrome, opera, safari
ajax = new XMLHttpRequest();
}else if(window.ActiveXObject) {
// retards
ajax = new ActiveXObject("Microsoft.XMLHTTP");
} else {
alert("Your "browser" does not support AJAX!");
return;
} var url = "search.php?q=" + wut;
url = url + "&sid=" + Math.random();
ajax.open("GET", url, true);
ajax.send(null);
document.getElementById("results").innerHTML = ajax.reponseText;
}
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Jan 12, 2010
I have an object with a member function that changes something on the objects state. This works perfectly fine in the easy case. But when I use an $.ajax call within the function it doesn't work. Here is the example code and failing QUnit tests: [URL]
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Feb 8, 2010
I'm making this ajax call:
Code:
url = "/GeoAdaptaApp/geoLogger/logGuiEvents?json="+aLotOfJSONStuff;
encUrl = encodeURI(url,"UTF-8");
new Ajax.Request(encUrl, {
method: 'get',
onSuccess: this.sendQueueToServerSuccess( this,logConsole ),
[Code]...
The JSON string seems correct (I checked it with a validator) and it worked on an Ajax.updater (but i need a request now). Firefox keeps telling me:
[Code]...
The call always end up in the onFailure block. Full request here: [URL] It's very strange, Is there a better way to pass json objects to the server?
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Apr 17, 2011
Is there a way in Javascript or Jquery to return an array of all objects underneath a certain point, ie. the mouse position. Basically, I have a series of images which link to various web pages but I have a large semi transparent image positioned over the top of the other images. I want to find the href of the background image that the mouse pointer clicks over.
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Sep 5, 2009
Is there a better way to extend object with internal objects?
$.fn.bestShow = function(s) {
var d = {
width: 0,
height: 0,
order: "numeric",
orderBy: "",
[Code]...
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Jul 12, 2006
well i've a display problem in my ajax script, my script ask to the server a message every x seconds so when i receive it, i display it in a div element with innerHTML. But the first message of the first time i launch the script in my page i see 'undefined', like :
undefined
message 1
message 2
...
The problem is solved when i redo the script without reloading my page. Like an element which didn't exist yet... How can i fix this?
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Dec 16, 2011
I'm trying to implement a script that will display both the user's local time and the time in St. Louis (based off of the server clock; I want to convert it to UTC, then subtract the hours based upon DST, either -5 or -6.) But I'm hitting a slight snag. As far as the local time, that's a two-inch putt. I'm grabbing the datetime from the user's computer, and manually formatting it to look like: Your Time: Friday, December 16, 2011 - 08:35:00 PM
I'm using AJaX to get the time from the server using return xmlHttp.getResponseHeader("Date"); and the hours, minutes, and seconds are fine, as is the year. But when I try to use getMonth() and getDay(), the values are coming back as "undefined". I'm assuming because they are expecting integers, but receiving text. So, how can I retrieve the month and day-of-week from my AJaX?
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Feb 1, 2006
I'm trying to do use XMLHTTP to do a POST in the following JavaScript snippet.
var xml = new ActiveXObject('Microsoft.XMLHTTP');
xml.open("POST", "http://some/url/", false);
xml.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xml.send("username=myusername&password=mypassword");
document.write(xml.responseText);
This works fine in Internet Explorer 6 SP2. However, I would like to use https, rather than http. When I change the URL to https and reload the page, I get an error: "The download of the specified resource has failed". As a test, I tried running the same code in Firefox (changing the first line to "var xml = new XMLHttpRequest()"), and this worked for both http and https perfectly, although using https causes a dialog box to pop up asking the user to accept the SSL certificate. Unfortunately, I really need this to work in IE.
I found a couple of discussions on Usenet about this, but none that seemed to give me a clear answer to this issue. Does anybody know what might be wrong or how I might fix it?
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Jul 23, 2005
Just playing around with xmlhttp at the moment. I was just wondering if
there is any reason (browser compatibility etc) the response data has to
be formatted in xml, or can I send csv or whatever else if the handler
is up for it?
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Jul 23, 2005
I've been looking into the possibility of using XMLHTTP for my
enterprise application but I still have a question.
When you send the request to the server, how does the server know how
to handle the request? (i.e. how do I specify what method to call in my
java servlet?)
I'd appreciate any help on this.....I've only got a vaey basic
knowledge of javascript and I am fluent in java.
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Jul 23, 2005
anyone have a code example of using xmlhttp with mozilla, if i use the
following code, the function is never called, but it does work in IE.
xmlhttp.
{
if (xmlhttp.readyState == 4)
{
var response = xmlhttp.responseText;
divResponse.innerHTML += "<p>" + response + "</p>";
}
}
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