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.
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?
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?
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>";
}
}
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:
View 2 Replies View RelatedUsing XMLHTTP and DOM I'm able to load new HTML page content.
I'd now like to load small snippets of javascript with the HTML markup
and have that <script> incorporated into the page. If any of the loaded
script exists outside a function definition (eg: a call to a function),
I'd like that code to be executed as soon as its added to the DOM.
Can anyone suggest the best way to do this? I've Googled but not found
anything comprehensive. Do I need to use the eval() method or is there
a better way?
It's a security setting "Access Data Sources across domains" you've
got lowered security for whatever zone you accessed the page in.
There is a problem with XMLHttpRequest and Firefox when the
function that makes the asynchrounous request is called from another window. The URL
of the window does not change to the next page in which i am displaying
the response.
wat does getAllResponseHeader() function do?
I'm writing a script to send posts to a web forum. I find that
MSXML2.XMLHTTP object could communicate with web server but I can't make
it send cookie which is needed for post authentication. I have searched
google and read some articles including: Code:
So, my url looks like index.php?id=2&name=test&place=14
There is a next link that uses an onClick= to call an ajax function. This ajax function runs this php script (bar_next.php) behind the scenes.
I need to put just the id value into the code below.
xmlhttp.open("GET","bar_next.php?id=URL VALUES GO HERE",false);
I've picked up a copy of "Foundations of Ajax" and was working through one of the initial examples and ran into a problem. xmlhttp.status always returns 0. I can run the following code and get the expected text returned from the server but only if I comment out the conditional that checks xmlhttp.status
<script type="text/javascript">
var xmlHttp;
function createXMLHttpRequest() {
if (window.ActiveXObject) {
xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
alert('ActiveX xmlhttp object instantiated');
}
else if (window.XMLHttpRequest) {
xmlHttp = new XMLHttpRequest();
alert('Non-IE xmlhttp object instantiated');
}
}
function startRequest() {
alert('Start request fired');
createXMLHttpRequest();
xmlHttp.onreadystatechange = handleStateChange;
xmlHttp.open("GET", "simpleresponse.txt", true);
xmlHttp.send(null);
}
function handleStateChange() {
if(xmlHttp.readyState == 4) { alert('ready state == 4');
// if(xmlHttp.status == 200) { alert('status == 200');
alert("xmlHttp.status = " + xmlHttp.status);
alert("The server replied with: " + xmlHttp.responseText);
// }
}
}
</script>
I don't understand how xmlhttp.responsetext can return the text in the file if xmlhttp.status returns 0. I'm running apache 2.055 on my local xp box. apache is a stock cfg except for vanilla changes I made to add php5.
i want to postload javscript from another javascript. This works fine in
firefox and IE6 for macIE i can use an Iframe to load the code and inject it with insertAdjacentHTML The problems arise with safari and opera. Both load the new code with XMLHttpRequest, but the code is no 'executable'
To make this possible on IE i had to use the magic 'DEFER' attribute.
(Sync or Async ist not the issue)
This is a extract of the working code:
I'm trying to translate an asp application, i have some difficulties with a
particular line :
---
Set myxml = Server.CreateObject("Msxml2.ServerXMLHTTP.4.0")
---
Classical ajax exemples rather use :
[...]
req = new ActiveXObject("Microsoft.XMLHTTP");
.... But i'm not sure the ActiveXObject is identical to the original :
Set myxml = Server.CreateObject("Msxml2.ServerXMLHTTP.4.0")
I'm not an asp expert, can you give me some tips on that question ?
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:
I create an ActiveXObject("Msxml2.XMLHTTP") from my HTML page to submit
(i.e. post) XML to a server. I can see the content of the XML response via javascript alert(xmlhttp.responseText). Is there a way to display the content of xmlhttp.responseText on a new page?
I tried document.write(xmlhttp.responseText) but this does not display
the XML structure....
I am trying to make a fuinction that, when called, will return the string that is retrned in text form from my php code.
This is what i currently have, but it is just failing when it is run, what am i doing wrong?
function shortenUrl(url) {
var response;
varxmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", "http://10.1.1.10/projects/short/?ext&url=" +
[Code].....
ohh, and this is running chrome, so no standards issues :D
Say x in a XML Http Request Object ... meaning it's either XMLHttpRequest (firefox) or ActiveXObject (IE)
This line of code works in firefox...
x.someProp = "someValue";
alert(x.someProp);
But in IE I get "Object doesn't support this property or method" I need to place a custom property on the object. Is there any way I can do that in IE?
I've already tried ActiveXObject.prototype.someProp = "";
Save the following code as "WHOIS.hta". Then launch it(For Windows 9x+ & IE 5.5+).
And it's easy to convert it to asp. So it may works well on your web server, too.
<html>
<head>
<title>WHOIS WebService</title>
<!-- Edited by LeXRus http://LeXRus.blueidea.com/ -->
<meta http-equiv="Content-Type" content="application/hta; charset=utf-8">
<HTA:APPLICATION ID="oHTA" APPLICATIONNAME="WHOIS" BORDER="thick" BORDERSTYLE="normal" CAPTION="yes" MAXIMIZEBUTTON="no" MINIMIZEBUTTON="yes" SHOWINTASKBAR="yes" SINGLEINSTANCE="no" SYSMENU="yes" VERSION="0.73B" WINDOWSTATE="normal"/>
<style>
body{background:buttonface;border-width:0px;overflow:auto;}
#domain{border:2px inset; font-size:11px;font-family:verdana;width:200px;text-align:center;}
#submit{border:2px outset;font-size:11px;font-family:verdana;font-weight:bolder;}
textarea{width:100%;height:350px;border:2px inset;font-size:11px;font-family:verdana;overflow:auto;}
div{font-size:11px;font-family:verdana;}
h1{font-size:24px;font-family:tahoma;vertical-align:middle;}
</style>
</head>
<body onload="window.resizeTo(600,500)" onresize="window.resizeTo(600,500)">
<div align="center">
<h1>WHOIS Search</h1>
<u>D</u>omain: <input type="text" id="domain" accesskey="d" value="blueidea.com"/>
<button id="submit" type="button" onclick="submitSearch()" accesskey="s"><u>S</u>ubmit</button>
</div>
<br/>
<div align="center"><textarea id="result"></textarea></div>
<script>
var
url='http://66.165.154.102/whois.asmx',
soapRequestStr='<?xml version="1.0" encoding="utf-8"?><SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"><SOAP-ENV:Body><GetWhoIS xmlns="http://www.webserviceX.NET"><HostName>blueidea.com</HostName></GetWhoIS></SOAP-ENV:Body></SOAP-ENV:Envelope>'
var
xmlhttp=new ActiveXObject('msxml2.xmlhttp')
xmlhttp.onreadystatechange=getReady
xmlhttp.open('POST',url,true)
xmlhttp.setRequestHeader('Referer',url)
xmlhttp.setRequestHeader('Content-Type','text/xml;charset=utf-8')
xmlhttp.setRequestHeader('SOAPAction','http://www.webserviceX.NET/GetWhoIS')
xmlhttp.setRequestHeader('Content-Length',soapRequestStr.length)
var
xmldoc=new ActiveXObject('msxml.domdocument')
xmldoc.loadXML(soapRequestStr)
function submitSearch(){
xmldoc.selectSingleNode('//HostName').text=domain.value
xmlhttp.abort()
xmlhttp.onreadystatechange=getReady
xmlhttp.open('POST',url,true)
xmlhttp.setRequestHeader('Referer',url)
xmlhttp.setRequestHeader('Content-Type','text/xml;charset=utf-8')
xmlhttp.setRequestHeader('SOAPAction','http://www.webserviceX.NET/GetWhoIS')
xmlhttp.setRequestHeader('Content-Length',soapRequestStr.length)
xmlhttp.send(xmldoc)
submit.disabled=true
submit.innerText='Searching...'
}
function getReady(){
if(xmlhttp.readyState==4){
result.value=xmlhttp.responseXML.selectSingleNode('//GetWhoISResult').text.replace(/[sS]+Network Solutions reserves the right to modify these terms at any time./,'')
submit.disabled=false
submit.innerText='Submit'
}
}
</script>
</body>
</html>
want to get the alert on responce text, but getting nothing, my code is as follow,
<?php session_start(); ?>
<script type="text/javascript">
var xmlHttp
[code].....
is it possible to use the xmlHTTP.responseText in any other java function, after execuation of stateChanged() function??? example in ajax...
[Code]....
i used many ways (a little bit i know) to do but could not get the success. how can we do???
how to Get xmlHttp.responseText when you call from IFrame? I get empty xmlHttp.responseText, while when calling server from out the IFrame, I get the responseText without problem, how can I solve this problem?
<iframe>
<input type="button" onclick="CallServer()">
</iframe>
I'm working on a script that calls my php file, checks the db and returns text. If the returned text="bad" then i want the var "bad" to be set to 1. at the bottom of my script, if anything has tripped bad=1 then it returns false and the form doesn't submit...everything works great except for this one piece so i was wondering if you guys might offer me some insight
[Code]...
I need to turn xmlhttp.responseText into a column of links that will be displayed in a popup div.I've defined xmlhttp.responseText as var named txt with: var txt=xmlhttp.responseText;
That produces a var with comma delimited values. I'd like to proceed by passing txt through a For Loop that will create the links, but I can't find a method that will count commas.
How do I return the number of commas in javascript?
I have a javascript that is supposed to read a text file (a log from a php script) and it should be shown in a html page. Even more, it should read that txt file again every 10 seconds and update the result every time on the page.
I use xmlhttp for this, after a suggestion from someone on this forum. My script is working well, but only the first time the page is loaded. From then on it becomes unrelieable and I dont know why.
This is the first part: loading a function in the body tag, and a browser version check, I dont think there is any problem in this.
Code:
<body onLoad="showbuffer();">
<script language="JavaScript">
<!--
var xmlhttp=false;
/*@cc_on @*/
/*@if (@_jscript_version >= 5)
try {
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
} catch (E) {
xmlhttp = false;
}
}
@end @*/
if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
xmlhttp = new XMLHttpRequest();
}
//-->
</script>
This is the second part, a self made looping function that looks up buffer.txt , and writes it on the page.
Code:
<script language="JavaScript">
<!--
function showbuffer() {
xmlhttp.open("GET", "buffer.txt",true);
xmlhttp.onreadystatechange=function() {
if (xmlhttp.readyState==4) {
buffertext=xmlhttp.responseText;
document.body.innerHTML= buffertext;
}
}
xmlhttp.send(null)
return false;
setTimeout('showbuffer()', 10000);
}
//-->
</script>
And this works, if I load my page then it shows exactly the content of buffer.txt . And if a bit later some data is added to the txt file, then it doesnt show up in the xmlhttp page , its still the same content as from the beginning so it didnt update. But there is something really weird about it, if I open up a second browser window and typ in the complete url of the buffer.txt file, and visit that page and look at the new data... then within 10 seconds the new part is added to the xmlhttp page. So the javascript function doesnt work, unless I refresh the page it is supposed to read. I've tried to mimic that, with a php script in crontab that would read buffer.txt through file(); or fopen(); every minute , but that didnt seem to work.
I dont think there is anything wrong with all the xmlhttp part of it, but rather with the way I try to integrate it into a loop. But this setup with setTimeout is the only way I know to make a function repeat itself with a few seconds delay after every step.
So, could anyone please point out how this could be solved ? Maybe another way to loop the xmlhttp part perhaps?
alert(xmlhttp.responseText);
gives a system error number: -1072896658
I have declared the object using:
var xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
It works with IE version 6.0.2600 but not with IE version 6.0.2800
Couldnt find wat tis error code 1072896658.
I am trying to populate two select boxes with over hundred option elements for each. I have succeded in doing so but with a little problem. I make two xmlhttp calls one after another. What happens is that if the first call doesn't make it before the second, the data in the first select box fails to load and the second box succesfully loads data. I am new to the Ajax world but i am sure i am not doing it right.
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