Prevent JavaScript File Caching In All Browsers
May 14, 2007
I'm currently using this method to refer to my JavaScript files:
<script type="text/javascript" src="filename.js"></script>
While doing work for some clients I have made changes to the the JavaScript file referenced above. Because their browser has cached it, they end up getting errors on the page unless they hard refresh and get the new version of the file.
Is there anyway to make the JavaScript file come down fresh if it has been modified since the last download?
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Feb 7, 2009
The loaded file normally, an hrml file, they have no scripting code which can't prevent caching. So how can I do so with this kind of file ?
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Jan 27, 2009
I had an incident in which I uploaded a swf file with an incorrect URL. Well, when I noticed the issue I uploaded a 'new' file - but those who have previously seen the site kept seeing this "older .swf".Without a huge proces. renaming files, modifying html files etc.. Is there a way to customize a meta tag or some other mechanism to have a '.swf' file NOT CACHE. It has to not cache in all browsers.. ala: ie, ff, safari
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Apr 23, 2006
I have a oc4j application server hosting my application . I can see
from tcp monitor for eg: GET /scripts/main.js and the server responds
with last-modified timestamp. However for subsequent request IE does
not use if-modified-since and further for each script in Local Settings
is getting cached as main[1].js, main[2].js etc and also in different
directories. This does not happen for all script but if a page has some
15 scripts included the last 5 scripts show this behaviour.
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Nov 23, 2004
Can anyone help figure out why my javascript preloaders aren't preloading! Code:
the navigation section utilses simple js rollovers on the text options, with the onMouseRollover event loading an additional graphic image to the right of the menu. It appears almost instantaneously on broadband, but as I'm testing it on 56k and I'm trying to appease all users I required the navigation images to preload (especially those giving the description of the option).
They appear to preload fine in Netscape7 but not in IE6???
I won't list the entire source here apart from the following sections:: Code:
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Jul 23, 2005
We have a dynamically created javascript menu (from ASP), which is
customised per user (Have already taken all the static code out into
separate cached .js file)
The size of the 'dynamic' menu content can be as much as 10kB, and the
menu typically does not change for the duration of the user's session
- i.e. it would be nice to get the browser to 'cache' this. It is an
Intranet application, and is typically aimed at IE6 clients only.
Have considered the following strategies
1) Cookies - although the last thing I want is the whole menu coming
back to the server on every HTTP request - but would be useful IF
there is e.g. a header option the cookie to 'send' the cookie (Server
-> Browser) without the browser ever sending it back to the server
(but the browser still being able to 'read' the cookie?)
2) Creating 'dynamic' javascript files - i.e. send the output per user
to a mangled .js file (e.g. with a session ID in the filename), into a
cached js file. Would however need to cleanup the files quite
regularly, and giving IUSR file creation access doesn't seem a good
idea. Would then get the browser to include the JS by generating ASP
along the lines of.
<script language="JavaScript"
src="TempScripts/Menu<%=UserSession%>.js"></script>
Is there any other way?
Second Question : Is there any way to get IE to stop sending up the
HTTP REFERER header up to the server (e.g. RegKey) - this is pretty
pointless on an Intranet App (I know there is a way to do in
NetScape).
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Oct 20, 2003
Script to prevent browsers pop up E-mail privacy warning when submiting a form
A very basic form has been employed :
<form name=formulario action="mailto:ron_wolpa@hotmail.com"
method=post enctype="text/plain"> form contents ......</form>;
(I don´t domine cgi- bin nor php , and even I if did it some servers where I host my files do not support both , that´s the reason action is a simple mailto: )
It works fine but as visitor press button "SUBMIT" , browsers like IE and Netscape pops up a privacy warning screen notifying visitor that his email will be disclosed ;
a 2nd pop up demands another click confirmation to send the information collected by the form ;
What I have in mind is a script to do the following :
1- to submit the form just by clicking submit button once
2- as visitor press on submit button , will be directed to another html document where will receive the usual thanks and the confirmation message ;
I find it necessary because as the basic form is above the message is sent and the form fields are not cleared , not giving the visitor any confirmation ;
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Mar 22, 2011
My swf.js file is getting hacked along with some jquery files, they are injecting cross browser hacking script to .js files.
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Dec 16, 2006
I am wondering if anybody can provide statistics what is percentage of visitors with disabled JavaScript.
Even more interesting would be statistics of users with disabled JavaScript making a purchase. I am more likely to purchase from my home than from work and I think the disabled JS is mostly result of IT dept. policies.
Is e-commerce site missing much if requires JavaScript?
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Jun 7, 2007
Can any one tell me different functions or properties of javascript
which are gives different outputs on different browsers ?
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Apr 20, 2003
Q: I have a pretty big html page - about 1,500 lines of code, 1,000 of which is javascript. (It's also referencing other javascript code, perhaps another 2,000 lines or so).
When I boot up the page in a fresh browser, it invariably crashes; the page just hangs. But, after killing the browser, and opening it up in a new one, the page seems to run fine. Is there some sort of javascript code limit that a web page / browser can handle...? Anyone know if there's a way to get around this? [Did I misread the problem? I'm pretty sure my code is fine.] Code:
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Mar 19, 2005
I have a lot of JavaScript code I wrote to add special features and effects to my Web sites. The problem is, with the latest versions of Web browsers, all browser-side scripts are blocked. Most users who visits will either not know how to adjust their security features to allow scripts or will not want to change their settings. In a case where the script is vital to the functioning of the Web page, what is the alternative?
For example, one of my script is for a drop-down menu that takes the user to the selected section from the drop-down menu.
The other feature I need is roll-over that highlight parts of a map so that the user can make a selection.
Is there something I can add to my JavaScript code to prevent browsers from blocking it or is there a different way of using these features with a different script?
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Jul 23, 2005
I have a select dropdown and 5 text fields. based on the option
selected (which are the units - cm/mm/inches/ft/yard etc), i change
the values in the text fields using javascript to the corresponding
units.
my problem is that when the options are selected very quickly(for eg
using the keyboard's up/down keys) then quickly, the text field values
lose their connection with the select box and the values become
illegal.
I suspect that the javascript function is being called even before the
earlier execution has not terminated. I tried using a global variable and using it as a lock, but still no success.
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Aug 31, 2005
Is there some way from preventing the JavaScript code in a document loaded into an iframe from executing? I don't have access to the pages being loaded into the i-frame so I can't modify then. They are being loaded from a server.
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Jul 26, 2006
I'm considering in teaching myself some javascript, but before I take the time to read up and experiment, I had a few questions.
Is javascript XHTML 1.0 STRICT Valid?
Is javascript valid for any version of XHTML?
Is javascript easily cross browser compatiable, or will this take a long time to work around?
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Oct 26, 2007
I am working on some JavaScript, that amongst other things does
searches in an index. The search can take a couple of seconds, and I
would like to disable the form button that the user clicked to trigger
the search. In addition I would like an animated GIF to appear,
visualizing that a search process is ongoing.
My problem is: While the procedure that implements the search is
executed, the browser window is not refreshed. The button stays in
"down" mode, the gif freezes.
Is there some command I could insert in between my code statements
that lets the browser refresh it's window's contents?
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Sep 26, 2009
Why this code is not working on Webkit browsers:
Only jquery and the plugin printed above are loaded, so there shouldn't be any conflicts.
HTML:
Chrome gives the following error: Uncaught TypeError: Object #<an Object> has no method 'followUser
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Sep 26, 2007
I got an [object error] from IE 7.0.5730.11 when moving the <script
src="..." type="text/javascript" /tag from the <headpart to the
<bodysection of a HTML file.
Is not possibile to include Javascript code via <script src="..."
type="text/javascript" /from the <bodysection, instead from the
<headone? If yes, anyone has any idea of which the problem could be?
If not, how can I programmatically include a javascript external file
inside the <bodypart of a HTML file, for example, using Javascript
to some particular native functions?
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Jul 26, 2006
is it possible to use functions from javascript file A.js in javascript file B.js?
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Feb 16, 2009
Technology: - We are using Apache Web Server, PHP, and Java Script on Windows XP. We have created a signed jar with the help of following steps.
Step 1:- Download NSS and NSPR tool
Step 2:- Setup the tool in C:
ss-3.10
[code]....
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Jul 23, 2005
If I use javascript to 'read' and XML file does that mean that the XML
file gets downloaded to the user's cache?
I'm building a quiz and I'd rather not have the answers too easily
available. I believe there's no real way to secure anything client side
with javascript so I'm just trying to keep the curious at bay.
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Apr 17, 2009
just came across this in a book for browser javascript on/off detection:
Code:
<noscript>
<img src="monitor.php?scriptoff=true" />
</noscript>
just wondering if browsers when js is off will ever access any
<script type="text/javascript" src="file.js"></script>
files? i mean wouldn't it be better not to bother with the noscript thing and just be aware of if file.js is accessed? or do some browsers access the file.js even when js is off?
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Jul 23, 2005
I'm passing the asp parameters using the url current page is files.asp and I'm using window.location.href=files.asp?action=deletefile to pass the action to the serverside
My code never got executed (like the page was cached) unless i put document.write("") before the window.location directive.
Here's the code:
function confirmDelete(x){
var potvrda=confirm("Kliknite OK za brisanje. Cancel za povratak.");
if (potvrda==true) {
trans="files.asp?action="+x;
document.write("")
window.location.href=trans;
}
else {}
}
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Aug 8, 2005
var xmlfileLoaded = xmlDoc.load(xmlFileName);
and we noticed that this files are not cached in numbers of clients Internet
Exporer v6.
We see in httprequest log this request.
We also tried to gzip the request but probably xmlDoc not allowed it.
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Oct 28, 2005
I've created a page that uses HTTPRequest to include some
XML data and allow the user to update that data. The
problem is that the new data doesn't show up, even though
the XML file is changed.
I can call the XML file up in a separate browser window,
where I get the old data, refresh to get the new data, then
when I refresh the first browser, the new data appears on
the page.
I'm thinking this might be some sort of server caching
issue. Has anyone else run into this? Does anyone have a
solution?
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Nov 23, 2005
This example
will show that the first call to "doit()" will print 30 times the image
with only one call to the server. Then I have a timeout and call doit()
again, and this time, it downloads the picture 30 times!!!! It doesn't
even time to finish downloading the pictures before the next timeout
kicks off and if I let it go for a minute or two i have like 300 calls
to download the same image trying to be downloaded!
I heard about a bug in IE that would require to preload the images
using a hidden div, but that didn't work. I see that google maps manage
to not having to reload the image and gets it from cache. What am I
doing wrong? This works perfectly in Firefox (i.e. it uses the cache
and calls the server just once). Code:
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