AJAX :: Detect Activities In A Web Page?
Jul 22, 2010
I'm building an application that calculates the total price of items when adding them up and displays it in a particular div tag called "totalCost" using AJAX. But sometimes it might take long to calculate (due to server response time or something else) and that could annoy clients. I just want to detect when the AJAX takes long to display the new total price, so I can show a message like "Calculating, please wait..." or an image (a clock, sandglass, etc...) as an overlay.
Please, how do I do that in javascript?
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Feb 14, 2009
Can Javascript be used to detect a certain url and then "not" write some html according to that url and also detect something on the page and "then" display some html?.
Example: I'm working on a volusion site that uses asp. There's basically only one page that's changed dynamically. I would like to display some html when and only if the cart has any items in it. But also not to show up on the check-out pages.
The page dynamically displays "Your cart has 1 item in it..." when the visitors puts something in their cart.
So could javascript detect when this is displayed then write some html and then also detect if the url is showing the cart and then not show the html?
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Jul 23, 2009
I'm developing a framework that allow all navigation in normal mode or in ajax load.
I have a form to upload images and I can upload files correctly, but if I use the ajax form, the save page don't receive the HTTP_X_REQUESTED_WITH in $_SERVER PHP array (only occours when a file is uploaded).
How can I detect an ajax load with a file upload form?
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Feb 26, 2011
I'm working on a website, where a fixed <div> holds the menu and links id's on the page with <a href="#">'s - like this:
HTML Code:
I'm wondering if it's possible to detect which of the <h1 id="i1">Item1</h1>'s that's currently shown on in the browser window? My idea is to highlight the menu-link(s) (e.g. by changing color) of the items headings shown in the browser window (so it changes as the user scrolls down through the page)?
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Mar 24, 2011
I've tried searching for this under the forums — and maybe it's because I just am using the wrong terms — but I cannot find any answers around this. Here's the skinny:
I've got a listener for click events from links in DIV #1 in the loaded document, and when a user clicks on one of those links, it passes a value to a .get() function and runs a simple AJAX call and dumps the data/html results into DIV #2.
After that click event, DIV #2 has a bunch of links in it, and I'm trying to traverse that dynamically assembled list and perform another .get() function based upon whatever link they click in DIV #2.
Based on the parameter passed from the link in the dynamically assembled DIV #2 box, it would run the .get() function and fill DIV #3 with the data/html results from that second AJAX call. The problem is that I can't seem to detect any sort of click event from the contents of DIV #2 aside from clicking on DIV #2 itself. I've tried the usual .children() to try and traverse down to where the inserted links would be, but that's not working (e.g.: $("#div2").children("a").click(); ). I've also tried .find(), filter() and .has() but it doesn't respond, as if there was nothing there.
Here's the code I'm working with:
<div id="album_row">
<a href="#" rel="1">Album 1</a>
<a href="#" rel="2'>Album 2</a>
</div>
[Code].....
I have a feeling it's something simple that I'm missing here; but I've no clue what I'm doing wrong. It seems that you should be able to traverse the DOM, even when you're essentially building it dynamically based upon a user's selection or an event within the DOM.
what I should be using to use to detect click() events from dynamically assembled elements? I know exactly what DIV they'll be sent to, I just can't seem to traverse anything with them when I'm dynamically inserting HTML into them.
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Jan 10, 2007
I have a page that has links to other pages. I want to be able to detect when the user has clicked on Back (or typed Backspace) to move back to my page. Is this possible?
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Sep 19, 2009
In which ways can I use javascript to detect if the page was coming from localhost.
I know I can search for localhost in string from location.href, but that would miss instances where pages comes from let say:
local.testsite.com or similar
where local.testsite.com are added to the hosts file (windows)
Is there a way to detect this that will allways work?
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Aug 13, 2010
I have a goal in mind, and that is to get the width & height of a <DIV> tag in one document and insert them into another document...all on the same domain. It sounds like a simple task, but in case more detail is needed, let me explain:I have a page called 'demo.html' which launches a page called 'gallery/archive_iframe.html' via Shadowbox as an iFrame.
The problem is that 'gallery/archive_iframe.html' slightly differs in dimension on every browser and screen resolution. I want to have the iFrame's size detected every time it launches so Shadowbox can get solid dimensions to display it without scrollbars.Here is the code I would like to insert the dimensions in to:
<A HREF="/gallery/archive_iframe.html" rel="shadowbox;width=???;height=???" class="imgLink" title="Video Archive"><img src="gallery/videoarchive_thm.jpg" alt="Launch Video Archive (popup window)" width="260" height="162" border="0" /></A>
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Sep 24, 2010
Does anyone know of anyway to detect if someone prints a page?
I've tried putting an ASP.NET tracking file in between the print media .css file but it seems browsers request all css files whether they're printing or not, so that wont work.
Is there any way to detect this using Javascript?
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Jun 12, 2011
What i'm trying to do is pretty simple. I want to detect if the value of a field in a form called "check" and if the value is "1" return the user to a different page. i also want it so if the value is anything else the user is returned to the homepage. Here's what i have so far:
[Code]....
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Aug 8, 2009
How to I can detect if a div was changed after the page loaded?
E.g. by innerHTML function.
ps: onChange not is valid for tag div. Reference here on w3c.
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Aug 22, 2005
when a user clicks back to get to my site, I want it to run a javascript
function.
can you detect when the FORWARD button is greyed out?
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Feb 24, 2006
I need to detect if page loaded or not with a script (in a child
frame). The IE has a special readyState function, is there anything
similar for Mozila browsers?
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Apr 26, 2010
I want to - after the page has loaded - detect a text string in the code..Simply put I want javascript to detect a text string in the source code and return it to me -- AFTER the page is fully loaded.
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Nov 27, 2009
I have a photo gallery that cycles images using custom buttons and replacing images from an javascript array. I do this so that I don't reload the page each time, just put up the next image so the next image (preloaded) appears instantly. I change the URL to include the image name so that it can be saved, linked, sent etc.
If I load the page and cycle through some pictures and then use the back button I can't find a way of detecting this and putting up the previous image - it just changes the URL in the browser and eventually unloads the page when it should.
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May 20, 2010
window.onload does not quite seem to do the trick.
My only other idea is to do: setInterval(myfunction,1000)
where myfunction goes through DOM tree and detects any changes (well at least element additions - new elements with unknown id's).
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Nov 17, 2009
i am using jquery to detect picture width and height in a page. if the size exceeds a specified value, then a maximum size will be assigned to the <img > attribute.
this jquery is run with $(window).load, because when $(document).ready the pictures may not be loaded and the script may fail
this theory is good. however, if the internet speed is slow, or the picture link is dead, user would have to wait for a long long time before the jquery executes.
is there any way to do the resizing job wisely? for example, resize each picture once each of the pictures is loaded?
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Aug 19, 2011
This should be an easy answers since I am a newbee and never redirected older browsers.For example I am learning JSON now and the below browsers are the only browser that can use the faster and safer JSON.parse parser. older browsers need to use javascripts eval() to parse json files to javascript objects.
[Code]...
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Nov 23, 2010
I am trying to trigger an event once the user clicks the browsers back/forward buttons, I have built a system just like facebook where if the user has javascript turned on they get the full feature of the site which includes fast switching for example if someone goes to this page "example.com/index.php" and click a link to contact.php it would change the url to "example.com/index.php#!/contact.php" but what I need to know is if there is any way to change the pages content when the user goes back and forth through the fast switch pages? something like "history.back !== -1" or something like that.
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Aug 4, 2010
I've already developed a system for doing this which isn't perfect i'm wondering if there is a better solution. Here is the code I got atm.
[Code]...
I don't like the use of key == 8 and length == 1 to detect that chatmsg box is empty, but the event triggers before the val() of the chatmsg actually changes. So is there nothing better I can do?
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Apr 14, 2009
I'm creating an AJAX page that is built using a PHP Class, ie the php looks a bit like this: PHP Code:
$wp_page->addjs('../var/savepolicies.js')
$wp_parser->page = "userpolicywindow.php";
$wp_parser->addlink("Home","../index.php","");
$wp_parser->addlink("Logout","javascript:logout();","");
$wp_parser->getpageid("501");
[Code]...
within this page that has been created, there is an AJAX tree folder which calls another page to be loaded into a DIV by AJAX again. Code:
[Code]...
I don't know why it doesn't work because the page has been loaded with the JS file, but as soon as the link is added afterwards it doesn't work. I take it this is because it doesn't know where to find the JS, but how can I overcome this?
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Jun 21, 2010
i was using $.ajax method to get my ajax page on my main page,which is working great.But now if i have links in that ajax page then i can't open them in that same div,the links are opening in new window,but i want to open in same part,i tried google it and then found, i have to use iframe instead of div.how to do with only use jquery and div.
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Nov 27, 2010
I have a script which needs to detect when the internet connection is lost and hold the content of the web page until the connection is restored.
I have been given a head start with a small javascript which I am trying to get to work.
My web page, I have a web page which contains some text and graphics but more importantly it also has an iFrame. The iFrame connects to an SQL database and displays data which is refreshed every 20 seconds.
Because the internet connection at the location where the script will be running I get connection loss which makes the iFrame loose its data. The Javascript I am working with is below.
Code:
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Feb 24, 2004
I am trying to write a script that uses the IF statement to see wether or not a user clicked the back button to come to a page, and then if it's true to not let the page load and kick them back X number of pages (say 4) This is what I have so far:
<script language="JavaScript"><!--
if javascript:window.history.back == 1
{
javascript:window.history.back(4);
return false;
}
//--></script>
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Aug 19, 2009
I loaded page in div , usign jquery ajax
But the page which i loaded containg this code:
HTML Code:
To refresh all page index.php to redirect it to home.php
But the problem this, it's don't refresh all page which contain the div , but it's refreshed oly in the div wuch i loaded this code in it
So i want after i load this code in index.php div , then refres all page to redirect itto home.php
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Jun 24, 2010
I need a simple javascript that I can use in my HOME page.index.html has a flash animationnoflash.html is a page without flash animationKindle does not support Flash and therefore i want to redirect my index.html to noflash.html page.
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