Im currently working on a fork of the famous web developer extension (chrome, firefox, opera). Exactly I am working on the chrome extension.
The Firefox extension is shown like that:
Chrome instead shows only a icon...
..which toggles the "pretty small" widget:
A part of my goal with this fork is to change this toggle icon to a toolbar such as firefox does.
After studying the documentation chrome extensions (https://developer.chrome.com/extensions/devguide) I came to the result that this is not possible with default settings (browser actions, page actions,...).
When I looked again at the Table of Contents in the documentation I got an idea. There is the possibility to edit the bookmarks. So it could be possible to add an additional bookmark bar/row and place the single web developer actions as bookmark with the function on it.
Is this the right way for solving this? Because at the moment I only see possibilities with more or less dirty hacks. And doing it via bookmarks seems at least dirty.
PS: I also thought about this:
The plugin is actually the same on firefox and chrome and from the same author. So when this adaption of the toolbar in chrome would be easy possible then would not have such differences in the chrome and firefox addon.
Nope, that's simply impossible.
Chrome does not support custom toolbars, and that includes "an additional bookmark bar/row".
The closest, visually, would be injecting UI directly into the top of all pages. I don't think I need to explain why that is hacky.
I installed a WP theme recently and am having trouble getting a Facebook conversion box to display when I visit my site through Chrome. This problem doesn't exist on Firefox.
The response I get on Chrome is no visible pop-up box, but upon inspecting the element, I do see the code for the box in my header.php with a line from the Chrome User Agent saying:
script {
display: none;
Is there a CSS solution to override the User Agent and get the script to display? Again, I have no problems with the theme on Firefox. Here's a link to my site.
Thanks in advance!
I think I found the source of your problem. It's a browser extension.
Your conversion box appears on my personal laptop. However, it doesn't on my work laptop. That lead me to believe that it was a conflict with the script & a browser extension. So I opened your site in an incognito window. Voila! it worked. The next step was figuring out which extension was blocking it. For me, it is LastPass (my work requires the use of LastPass).
If you have LastPass enabled as an extension, disable it. Then test again.
It'd also be a good idea to get these console errors figured out:
Uncaught SyntaxError: Unexpected token ; (index):476
carouFredSel: No element found for "#foo1". jquery.carouFredSel-6.2.1.js?ver=3.8.3:4232
Uncaught ReferenceError: paginateVal is not defined cgview.js?ver=3.8.3:28
Solutions
Unfortunately, there isn't much you can do about people's individual extensions. If this is an absolutely critical feature for you, I'd look at finding a different implementation of it. One that does not conflict with common extensions (that's the easy option).
The other option (harder) is to look into the code of the plugin/script that you're using for the conversion box and identify the conflict.
Last option (hardest) is to look at LastPass extension source code and identify the bug that is preventing other scripts from running. I've had issues with LastPass interfering with javascript in the past.
Why does Firebug say there is No Javascript on this page when there are clearly loads of JavaScript on the page. I even reloaded the page several time to make sure but it still show the same message.
It never used to do that before, but all of a sudden it misbehaves.
Is it because of some configuration issues or because of something else?
As of Firefox version 50, it seems that Firebug will no longer work as Mozilla are migrating to Firefox Devtools. The tab Tools/Web Developer has a 'debugger' option. See this page for a discussion on the migration. Read all the posts dated 19 November for further information.
It seems to me that the option gives less functionality but Firebug per se is never going to be fixed for Firefox 50 and beyond
EDIT 2017 April
This answer is now outdated and I'm not even testing it anymore because I'm no longer using Firebug (a shame, I loved it years ago in a time it was The tool of trade for web developing).
EDIT 2014 November
The original answer is now more than a year outdated due to firebug evolution.
Thanks to #AmadeusDrZaius to keep it on tracks
Answer for outdated firebug versions
For anyone still with this problem after updating Firebug.
Just click Clear Activation List option inside the Firebug menu.
For those who can't find it, note that "Clear Activation List" shows up in the dropdown from the Firebug icon in the toolbar, but not the Tools > Web Developer > Firebug menu.
I guess due to the bug previous hitting your working page it stays listed as "no activate FB for this site please".
I encountered No Javascript on this page after upgrading Firefox to ver 50.0, with Firebug ver 2.0.18. I tried refreshing Firefox, even completely uninstall Firefox and installed again. Nothing works for me.
A couple of hours later, I downgraded Firefox to 49.0.2, and voila, it works right away. I downloaded the old version here.
I tried everything on this list and nothing worked for me except resetting Firefox like so:
https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-problems
I realize there are already 10 answers to this question, but in my case none of them helped. I'm running Firefox version 39.0 and Firebug version 2.0.11. The only fix is to completely restart Firefox (i.e. not just the tab or instance with the problem).
Perhaps it's due to Firefox's over-usage of memory, or maybe there's a bug in Firebug. I can't speak to that, but what I do know is it didn't work. I killed Firefox, opened the exact same page again with no changes made and now it works. This has happened to me numerous times and a complete restart always fixes it, but that's the only thing that does.
Since Firefox 49.0 and Firebug 2.0.18 the Script panel is broken. This is due to some internal Firefox API changes. And because Firebug is officially discontinued, this unfortunately won't get fixed anymore.
There was also a bug in Firebug 2.0.11 (and below) in combination with Firefox 39.0 causing this problem. This bug is filed as issue 7918.
It happens when the Script panel is enabled and you close Firebug and reopen it.
You can see two related error messages logged to the Browser Console (can be opened via Ctrl+Shift+J or Firebug menu > Developer > Browser Console):
error occurred while processing 'attach: TypeError: docShell is null
Stack: getChildDocShells#resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/webbrowser.js:53:7
...
and
onPacket threw an exception: Error: Server did not specify an actor, dropping packet: {"error":"unknownError","message":"error occurred while processing 'attach: TypeError: docShell is null\nStack: getChildDocShells#resource://gre/modules/commonjs/toolkit/loader.js -> resource://gre/modules/devtools/server/actors/webbrowser.js:53:7
...
Solution:
The only solution until this bug is fixed is to restart Firefox completely.
Similar things have happened to me because I forgot to add the closing tag.
DON'T do this:
<script src="some.url" type="text/javascript">
or
<script src="some.url" type="text/javascript"/>
DO this instead:
<script src="some.url" type="text/javascript"></script>
The same problem just happened to me. I thought that it was a problem in my scripts, but I checked google.com and the problem persisted.
My problem was that I had updated my version of FF and kept the old version of FireBug. When I updated FireBug and everything was solved.
From firefox 49, the fire bug will be built in and it is called fire-bug next. So the fire bug add on won't work properly and no issues will be solved. So you can use firefox inspector. See here for details information
If the problem only shows up on a single page, check that your script folder is referenced from current folder (".") or that's reachable from the server root ("/").
<script src="./scripts/pagescripts.js" type="text/javascript"></script>
may not be the same as
<script src="/scripts/pagescripts.js" type="text/javascript"></script>
As mentioned, sometimes there's a Javascript syntax error that invalidates the whole script. But I have also had this, and simply opening up the page in a new tab or window and refreshing firebug (disable, enable) gets the javascript to show up again.
One time this caught me out was when I published one of my sites and I was checking it out. No Javascript was working, there were no errors in the console and firebug showed no scripts.
It turned out that in that instance, I'd forgotten to allow the site in NoScript - so there really were no scripts being loaded.
Not sure if that's the problem you're facing but it's worth being aware of.
I also got this error when attempting to use Ajax to a different server than the one serving up the page. JavaScript only allows Ajax access to the server that served up the page.
This problem is STILL happening (Aug 2015) with Firefox 39.0.3 and Firebug 2.0.11
For people saying the code is wrong or missing end tags etc. all I did to get all the javascript to reappear in tab was to shut down Firefox and restart it. I didn't change anything. Also that "Clear Activation List" option didn't work (no idea what that means)
I upvoted #Tom_Thomson's answer above, but I am wondering if simply removing and then reinstalling the Firebug add-on might not have accomplished the same thing without losing all the other stuff like bookmarks.
FWIW this problem is still happening in August 2016. I'm using Firebug 2.0.17 with Firefox Dev Edition 50.0a2.
As a workaround, I'm able to use the Developer Tools, though they are not as robust as Firebug (when it's working).
Well Firefox native Inspector is good... I know that you will miss some things, but in general we can survive with it. The good news is... less one addon, FF will be faster :)
I am attempting to open an html file in firefox with minimal extras (toolbars, menubars, addressbar, etc). Just the html contents of the webpage, and nothing else. I want to be able to do this within linux from the terminal. I also have to do it in such a way that it works across multiple linux machines running the same version of firefox. So this removes any possibility of using a profile. I was hoping there would be a simple parameter to firefox that would allow me to turn these settings off. I dont believe there is.
The only possibility I have found is through javascript's window.open. It appears the parameter specs to window.open arent even functioning in firefox 1.5.0.9. I have read that some of them were removed in firefox 3.0+, but have not found anything regarding the version I am using, 1.5.0.9.
This is what I am using to open my .html file using windows.open...
test.html:
<html>
<body>
<script>
window.open('./rel_notes.html','_self','toolbar=no,menubar=no')
</script>
</body>
</html>
And then just running 'firefox test.html' from the terminal.
Both the toolbar and menubar still appear when I do this. What am I doing wrong? Is there a easier way to do this?
If your browser settings allow pop-ups without notifications from X source (localhost i presume?) then the following might work:
window.open('./rel_notes.html',null,'menubar=no,toolbar=no');
window.open('','_self',''); //this is needed to prevent IE from asking about closing the window.
setTimeout('self.close();',500);
Taken from a link in the link bungdito gave me:
After a window is opened, JavaScript can't be used to change the features.
So by opening test.html, and then using window.open on _self, I am trying to adjust features to a window that has already been opened, using javascript.
Source: https://developer.mozilla.org/en-US/docs/DOM/window.open
I have tried using JavaScript "AddFavorite" function in my code, but it does not work in Safari. It works in IE, I think I remember Firefox, but nothing I have tried seems to work in Safari. All I want to do is have a link on my website that people can click on and it automatically creates a bookmark in their bookmarks folder/bookmark bar.
Does this entail Applescript or something like it? Or a deeper programming language I am unaware of?
<a href="javascript:bookmarksite('Name', 'website.com')">
From the apple forums: forum-link
On the Mac side at least, Safari does not allow a website to add a
bookmark. I'm pretty sure the same behaviour is in the Windows version
as well.
I've been down this road, and what I discovered was that Safari does NOT allow bookmarks to be made with JavaScript:
Apple Forum
bytes forum
They consider it unsafe. As frustrating as this is, I get their point.
Unfortunately, most things like this tend to be browser-specific, and picky.
my JS is about level 0, but i did find this on an old article here:
One specifically for Chrome:
Add to favourites link for Google Chrome
And another on a cross-browser bookmark link:
Cross-browser bookmark/add to favorites javascript
Hope between the previous comment and these links, you get what you needed.
Chrome and Safari does not allow it for clear security reason.
You could usee a script like this:
http://www.dynamicsitesolutions.com/javascript/add-bookmark-script/
which handles many browser and has a nice fallback: show a browser customized alert with instructuion message.
Es: in chrome it says: "Ctrl+D to add as bookmark"
In IE something similar to the following would work: (MSDN)
window.external.AddFavorite(location.href, document.title);
However, this won't work in other browsers. In Firefox, I believe you can use
window.sidebar.addPanel(document.title, location.href, '');
to create a sidebar panel (not a real bookmark) but as far as I know Chrome and Safari do not allow Javascript to automatically create bookmarks. For those, I recommend giving the user the instructions to do it manually:
drag a link to their bookmarks
pressing Ctrl + D to add a bookmark
Clicking + or star icon in the toolbar