Extract HMTL Content Through The Use Of XMLHttpRequest Object?
Aug 1, 2009
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?
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Jan 9, 2010
I need to try and extract the following from a STRING not the current page[code]...
How would I do this? I had a look on google, but all they seem to be talking about is extracting from the current page, which I don't want
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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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May 9, 2010
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.
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May 7, 2011
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>
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May 1, 2007
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.
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Jul 10, 2009
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]
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Apr 3, 2006
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.
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Mar 16, 2011
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;
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Jun 9, 2006
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?
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Mar 12, 2010
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]
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Apr 5, 2010
I have a variable which contains a string of html that I wish to output into a content div on the click of a button.I can toggle the content of the div with the string above, but I wish to include the ability to parse that string before output, so I can translate its language before its output.I can easily do this once the html is output into the content div using the JS HTML DOM, but due to this conversion not being instant I'm looking into ways of translating this text before it is output, so changing the string stored in the variable html.
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Aug 4, 2011
i just tried creating a bar containing a div that you click on and it enlarges to show something, when clicking again it should collapse.
[Code]...
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May 13, 2009
How to scan a document through HMTL page at client side?
does we need JavaScript, VBScript or anything else.
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Feb 14, 2010
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)
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Apr 11, 2010
I have a page with links that use jQuery to load individual pages of content into a main content area. On one of these pages, I want to be able to link to a specific anchor. (ie, when you click the link named "exec" on the main page, it loads the "services" page and then scrolls to the "exec" div.
[Code]...
Everything works beautifully in FF and Opera but in IE, I get an error message saying "top is null or not an object". It's referencing the line where "target_offset.top" is called, but this is legitimate syntax, so I don't understand the problem.
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Mar 6, 2006
How can I reload content in an <object>?
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Apr 12, 2010
I have an piece of html in a jquery object. When I say $(this).html I get:
<span class="value">4</span><span class="type">teaspoons</span>butter
I want to get only the piece of text from this html segment that is not in the spans. in this example, it is butter.
How do I get that?
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Oct 13, 2006
I need to be able to get the value from the input box below to send a PHP script. This value is generated based on other fields in the form using Javascript.
<input type="text" name="need" value="0" onFocus="this.blur()">
The value of "0" is auto set because it starts out as 0 and as you fill in other details the number increases. I have tried to remove the "0" and continue but when posting to a PHP script ($_POST['needs']) it shows up blank.
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Jun 4, 2009
I have a URL...How can i extract string 'google' from above URL.
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Apr 17, 2010
I need to get the background-image urls from the style (and then remove the part thumbs). My intention is to dynamically create an img element corresponding to each thumbnail image.I was thinking to use a substr() to get the urls and replace() to remove "thumbs", but the property style.backgrounImage gives a string like url("/images/photos/thumbs/4923face.jpg") in FF3, where as in FF2 and IE6 it gives url(/images/photos/ thumbs/ 4923face.jpg).
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May 13, 2009
the title basically sums it up. how can i see if a word is in a url and then if it is, do something with it.
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Aug 8, 2009
I know, this is really a noob question and I don't really know what went wrong
The code is very simple. I have a web page that contains the following code...
I tried many other ways to get the text, but I just can't get it. Everytime I get null or blank or Object Text or no pop up at all. I am pretty sure document.getElementById('mydiv') is getting the right div. Can someone please give me an example, please, I feel so stupid because this shouldn't be a problem but I just can't really find a solution.
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Jul 18, 2011
I'm trying to extract just the number after the string "page/"
/store/page/1/sku/232434
/store/page/6/sku/323342
So the result would be:
1
for the first example
6
for the second example
The value I'm trying to get at will always appear after the "page/" Is there a way I can do this using jquery or some other way perhaps?
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Oct 22, 2010
I need to extract some data from the following block:<span <aref="localhost:80/items/2">item link</a> <span>item attribute</span></span> I can get the item link anditem attributedata by using $("span a") and$("span span"). I, however, can't figure out how to extract the "2" from the "localhost:80/items/2".
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May 1, 2009
to append a parameter string like: '?key=val' to the currenturl and the value for the key changes based on the user input. Isthere any jquery utility that does the base url extraction fromwindow.location, so that I can append the '?key=val' to that?
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