Using AJAX (XmlHttpRequest) To Load Images
Mar 23, 2006I'd like to create a slideshow using the same technology that Google Maps uses:
Load/unload images offscreen and the user can drag the images around.....
I'd like to create a slideshow using the same technology that Google Maps uses:
Load/unload images offscreen and the user can drag the images around.....
I'm having difficulty loading images via Ajax on a site that I've been working on.I'm performing the ajax by using the Request.HTML object of the MooTools framework. Basically, I'm just passing some parameters to a php script which outputs some image tags and then I insert that HTML into a pre-defined content div. For some reason though, it seems that big images don't seem to load consistently when using this technique. Usually, they will just show up as broken images, but when I navigate to the url of the image that is 'broken', it displays just fine. Also, occasionally after navigating to the actual url of the image, my browser will cache the image and then it will display just fine when loading it through Ajax.
View 3 Replies View RelatedI am working on a small gadget which downloads a series of images from the web and displays the images in a loop. However i am having trouble saving the xmlhttprequest to a file to use later in an array. I have read that it should be easy to save the .png using Scripting.filesystemobject but have been unable to find any information on how to do it.
Here is my code so far:
Code:
I am currently learning AJAX, and I want to write an simple example program (it is only for practice, it has no real meaning).
The program sends request to to PHP and gets response from it, then it should write the response using message box, all should happen on page load. I wrote the following code:
function init(){
myRequst = new XMLHttpRequest();
var url = "http://localhost/dummy.php";
myRequst.open("GET",url,false);
[Code]....
I don't see any message box when the page loads. When using it after the page loaded with other events (not onLoad), it works and I see the message box with the response.
How can I get the data on page load using XMLHttpRequest?
It is day two of the same problem (and day two of learning Ajax, day five of Javascript)
The current code (below) does nothing; it does not go into the showContents function. Switching the order of some items would cause it to enter the function, but it would always alert that the xhr status was 0. I guess this is an improvement?
php doc that is getting requested (I don't think the error is here as the problem is that it is not even initializing):
Code:
javascript code that is requesting the information:
Code:
I need to pass the num variable because the fields I am dealing with are part of a bunch of fors that create an unspecified number of fields titled 1source, 2source, 3source, etc.
My app recently upgraded to 1.4 and as such started using the XMLHttpRequest in the success callback of the .ajax function however we been forced to roll back to 1.3.2 due to performance issues with IE7 (forced to use in a corporate environment) Is there any way to get access to the XMLHttpRequest after an ajax call? If not, would anyone be so kind as to point out if its possible to modify the 1.3.2 source to add the parameter to the success call back like in 1.4? I am hoping its a simple modification however I could be wrong. We are set to upgrade to the lastest jQuery when we get a browser upgrade to IE9 but that could be up to a year away and I would really like to continue to use the XMLHttpRequest in my app as its a lot faster than my old approach.
View 2 Replies View RelatedXMLHttpRequest() function not work with IE 8. But its woking properly with other browsers.
[Code]...
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 am running the scripts below which should return a string containing a URL. So far, it cannot find the form contents in Firefox, but displays the non-dynamic data such as ?Location=. It won't work at all in IE.
HTML Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
[Code]....
I am trying to build a very simple Ajax example with JavaScript and PHP. Basically, the goal is to populate a select list with values dependent on the selection in another list. I am able to do a GET from a server-side script and I see the XML displayed correctly in XMLHttpRequest.responseText. However, when I try to check XMLHttpRequest.responseXML, I am not able to get anything out of it. The alert() shows it as an "Object", so it's not null. I have tried getElementByTagName() from both responseXML and responseXML.documentElement, each time giving a legitimate inner tag, but nothing comes out. What is the correct way of doing it? This is my JavaScript and HTML code:
[Code]...
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;
i am new to AJAX but i havejust managed to write one of my first basic scripts. What it does is takes all the news items out of a database and lists them as links. When you click a link i want all of the data that is linked to that news item to display underneath. Now i have got this to work except it will not work in Firefox, all other browsers it is fine.
[Code]....
I was wondering if it was possible to execute javascript returned by ajax (XMLHttpRequest)? I can see that the script is returned by it doesn't execute. Here is what it returns. I can see the output but when I click on it nothing happens.
Code:
<script type="text/javascript">
function hi(name){
var latBox = document.getElementById("myinfo");
latBox.innerHTML = "<div>Greetings: " + name + "</div>";
}
</script>
<p onClick="hi('hi');">Math.random = " + Math.random() + "</p>
I am trying to read data from server using AJAX XMLHttpRequest.responseText.In received data, there are lot of similar type of characters which has tge value of FFFFFD (65533). I think, all characters which has the value above 127 are converted to default character.
View 1 Replies View RelatedCan I use the XMLHttpRequest object to call a url which would generate a PDF and then display it to the screen?
I'm new to AJAX and I'm very interested in using it to asychronously bring back documents with a content-type that IS NOT text/plain or text/html (like a PDF or Excel document) and then display that document to the screen. I have a web application that dynamically generates PDF and Excel documents. A user may have to wait a minute for the new doc to be created and displayed to the user. I want to put an animated notice saying the doc is being generated similar to what you see when you execute a search on a search engine. I've tried using animated gifs (with frames, etc.) but they don't work. As soon as a request is sent for the PDF, the browser halts the gif in IE. If I could instead call the URL that will produce the PDF asynchronously, then I could display the animated gif and call the PDF at the same time. Once the PDF is generated, I want it to then be displayed to the screen.
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.
I've put together a function for screen scraping, just to see if I could do it. Basically, this gets a stock quote from Yahoo! and displays it. It works with no issues in IE7. FF and Chrome, however, it does not work. It will not display anything. Error Console is not returning any errors, and I'm a total novice when it comes to troubleshooting with FireBug.
[Code]....
I'm sure it's something simple, something I've overlooked. I'm beginning to think it might be with the trenary conditional setting the method.
I have the following code:
$("#printme").queue("printQueue", function (next) {
$(this).load("print.html", function () {
$(this).ready(function () {
passPrint(next);
[Code].....
I want the images on #printme to finish loading before the passPrint function runs, but everything I've tried does not work. The ready() in there does not work.
I tried creating a small widget that when a user clicks on one of the 4 buttons (links), instead of it taking the user to a new page it will load a specific div from another page is the div container above it.
HTML (excerpt):
<div imagePane></div>
<div buttonLinks>
<ul>
<li class="button1"><a>BUTTON 1</a></li>
[Code].....
The problem I'm having is that the content of the other page's div container loads, but that actual image that I set as the background does not.
I attempted to use .load() to serve up an image instead, $('#imagePane').load('path/to/graphic.jpg');but that didn't seem to work at all. Is there another function for this type of thing?
I have a problem when trying to load an HTML5 element with Ajax (jQuery.load ()).Here is a simplified example of the problem.
Main page :
<!DOCTYPE HTML>
<html>
<head>
<title>Title</title>
<!--[if lt IE 9]>
[Code]...
I have the following code to load some pages into a div using the load function. When I click one of the links though, nothing happens. I have read a couple of books on JQuery and looking at the examples they give, this looks correct so I am at a loss.
[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)
This is my first post. I know some html and css, but not much about javascript, and I have an existential problem with a portfolio i'm helping to design: The portfolio itself is for a night photographer that covers different events. For each event there is a page where the photos from that event are displayed.The thing is i don't want to write html code for each and every event, so i've been investigating how to automate this process and i've been answered: javascript.
I want a horizontal layout page for each event, where all the images from its folder are displayed, with a horizontal scrollbar and no vertical scrollbar. I've managed to cover this with a combination between css and javascript code.
[Code]...
I am using the Lightbox plugin for a gallery page. On the live site two of the images I added after I built the original gallery WILL NOT LOAD/SHOW on the lightbox! I cannot find any errors/discrepancies in my coding, and the previews (using Dreamweaver) in several browsers work FINE.
I have deleted and re-put the entire site from scratch, but still no success.
What am I missing?
Here is the page -- the uncooperative images are towards the end of the gallery (images 35 and 38): Cadogan Gardens - Creative Landscapes garden design landscaping in Melbourne Victoria
I am at a loss for what to do next to get these slideshows functioning. You can see the current iteration here[url]...
I am using hte plug in galleria, and I have got it working in a stand alone version with the same images and and folder structure. The difference may be that I have the content nested in these div tags? to create tabs. i really don't know.
Here is the structure within the portfolio tab, under the Identity heading: ( there will be more images once I get this working [code]...
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body bgcolor="#ffffff" text="#000066"> I'm working with some large images that are in markup but being
processed into queued animations. If image is already loaded but I call $load will it pull image from
browser cache? I want to use the success to do some size processing