I happen to keep background sync on my browser off yet, the changes that occur to a page on StackOverflow appear on the page on the top like it usually used to, you know the "An edit has been made to this post" banner at the top.
(Edited) That made me wonder about two things:-
How does StackExchange sends the information to the end-user about changes that occur on a page even with background sync off?
What really happens when I turn off the background sync in my web browser? Does it completely block any requests made to the server or something else is the matter?
Note: My browser is Google Chrome version 74.0 on a 32-bit Windows 7.
Related
I need a way to "disable JavaScript" / "not run JavaScript" in the web browser.
Is it possible to do it using JavaScript or some other automatic way?
Update: reason for this? Easy, there are some "online TV sites" where they use several iframes pointing to "cross site urls" and it is annoying to get several "advertising" pop ups all the time. By coding my own webbrowser "add-on/extension" I've tried to "delete" html nodes and some Javascript and it works for the "main page" code, not for iframe "Cross Domain URL".... so I think disabling javascript AFTER the movie starts, would be a nice solution.
Update 2:
The video I want is a result of a iframe cascade chain.... I've tried all the way to "catch" the final "url" result using fiddler and other tools, but its getting hard since this different "cross domain" communication is sharing "runtime keys" to avoid what I want to accomplish (perhaps with more time I can do it) but this is why I thought that an easy and fast solution would be just disable javascript after the movie starts.
NOTE: other extensions such as Adblock and similars DO NOT work, since the website detect it and the video never loads.
No, it is not possible to programmatically disable the JavaScript on a user's browser using another JavaScript add-on/extension.
However, it may be possible if you use PHP as a proxy to intercept the pages you want, and strip out all script tags. You might even be able to extract the video URL you want and play it using another (flash?) player.
If you are a system administrator and want to disable JavaScript on all your network's computers, please post on SuperUser instead.
You can't disable, but you can overwrite the javascript functions.
alert = function(){}
alert("hello")
You can even kill those iframes by tag name.
I have had a report that my company's website is resizing at least one employee's browser windows. I experienced this behavior myself on the user's computer, and it was mystifying because the resizing only occurred on our site, not on any other site, and it occurred on both Firefox and Internet Explorer. The user has a Windows 7 machine running updated software. She has no add-ons, themes, or plugins besides the usual (Flash etc.) and her settings are the factory defaults. I cleared the browser cache on both browsers and restarted the computer and it still occurred. The only thing left is the css, but none of it seems suspicious to me.
What is happening is, when she clicks a button or internal link on the site, then when the new page finishes loading, the browser window resizes to approximately 80% of the width of the content. That is, the very last thing the page does as it loads is to resize itself. If she zooms in or out, then on the next load, it again resizes to 80% or so of the smaller or larger size of the content. If she maximizes and then loads a page, then the window resizes to 80% but somehow maintains the "maximized" icon. (You then have to click twice on the "maximized" icon to maximize.)
The reason I am flummoxed is that I thought this kind of behavior was something you could only do with JavaScript, but I deliberately tested this with pages that had no JavaScript at all and it still occurred. There is exactly one page on the website that has browser-resizing JavaScript on it, but it resizes to a pixel size, not a percentage, and it's part of a web service that wasn't in use while I was testing.
What kinds of things should I investigate to solve this issue? Because this is an employee, I have to either fix the website or fix her computer, so ideas for investigating both would be great.
The problem turned out to be that single page with browser-resizing JavaScript I mentioned. Another set of pages had needed some JavaScript functions from that web service, so one person had copy-and-pasted the functions that were needed. Then someone else came along, noticed that the copy-pasting was a dumb idea, and decided to simply include the JavaScript file that had those functions instead.
The problem was, the command to resize the window was bare in that file. For that one user, that command was being carried out and resizing every window. For everyone else, their browsers were ignoring the resize command except on the web-service popup window. I can only assume she had the problem because she had factory-standard settings, and the rest of us didn't. To fix the problem, I moved the resize command from the JavaScript file to the head of the web service page.
I think this should be releated to IIS settings but don't know exactly what it is.
As you can see below, this login message pops up for each images, 8 images 8 times in Opera.
And the major browsers react to this page different.
IE9 works good(this is the reason why I found this problem now. It's internal site and almost every users use IE...)
Chrome(17.0.963.56 m) works good.
Safari(5.1.2) is also good.
Opera 11.61 has a problem like I said...
And FF SHOWS NO IMAGES and don't even ask for login. And Firebug says it's "NetworkError: 404 Not Found!".
I don't know what's going on.
This site requires to login and it's internal, so I can't give you the link. Sorry for the inconvenient.
And this site is running on Windows Server 2003. And the image containing folder is shared for web(I don't know why it's shared. But don't want to change the setting). I don't know this may cause this situation.
If Opera opens a user name/password dialog, the site is probably sending a WWW-Authenticate header in response to those image requests. You can open Opera's developer tools ("Tools > Advanced > Opera Dragonfly" or right-click in page and select "Inspect element") and use the network feature to inspect the full headers.
I don't know how you can disable this header if it is sent, it depends on the server settings and what type of server you're running, and I'm not at all familiar with Windows Server 2003.
I have developed a chrome extension. The extension itself works fine and fast.
But when I start the browser and click on the toolbar icon of my extension it takes about 2 seconds for the popup to appear and to show its content (this happens anytime the browser is restarted).
Any idea what causes this and how to fix that?
Tip 1:
Use your popup page for rendering exclusively. It should be as light as possible. All the heavy loading/processing (localStorage, XMLHttpRequests, blocking javascript) must be done in the background page.
The background page is loaded when Google Chrome starts. Basically, it allows you to execute code and keep a page always running (although the popup is not present). For instance, streaming audio in a html5 tag with no popup.
Note: If you are not using a background page yet, you should be taking a look to message passing first.
Tip 2: Warning: This could fail
I haven't tested this yet, but maybe using the HTML5 manifest.cache can help you preventing loading again resources stored locally. But beware, this is HTML5 and is prone to changes and unstability across versions. (also, I am not completely sure that the cached resources will be loaded in memory before the popup is opened)
Hope it helps!
Sometimes the style sheet disappears when naviguating on our WSS 3.0 sites (white background on the site, no colors, no formatting, etc.). This has mainly happened with IE6 (corporate browser for the majority of our computers). The fixes were :
clean up temporary internet files
if it still doesn't work, upgrade to IE 7
However, this time, the upgrade to IE 7 hasn't worked, the style sheet isn't applied. When we clean up temporary internet files, things go back to normal, but after a while the css disappears again.
Here are a few ideas on what you could try:
Fiddler should be able to tell you if there is a network problem.
Check the HTML for anything unusual. Is it malformed in any way? Can you save a copy and run it through an online validator (although this is limited in use as SharePoint's default markup isn't compliant).
If some users are having the issues but others aren't, check their permissions on the server.
You could also try using the SharePoint "Log in as another user" feature to see if the problem can be reproduced on your machine when logged in as them. You may also want to try running Internet Explorer as that user.
Check the Event Viewer on both client and server for anything unusual.
Check the IIS logs on the server for any errors.
Check the SharePoint ULS logs on the server in the "12 Hive" for errors that might be related to this problem.
Try running Process Monitor on the client and reproduce the problem. Search for keywords such as FAIL or ERROR to see if anything appears. Make a note of the time the problem occurs and see if the Process Monitor logs give any additional information.
Is there some javascript that's involved as well? Could it be a virus scanner that is set way to strict? As you pointed out in one of the comments, the CSS isn't even being requested (at IIS log level, which is as basic as you get, not even in SHarePoint yet), so it HAS to be something on the client PC.