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Questions tagged [firefox-developer-edition]

The Firefox Developer Edition is a special version of Firefox, which targets web developers.

The Firefox Developer Edition is a special version of Firefox, which targets web developers.

Besides the normal browser functionality it includes additional features that help people to create apps for Firefox OS and web sites.

See https://www.mozilla.org/firefox/developer/ for more info.

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Does refreshing Dev FF reset regular FF too?

After refreshing Developer Edition for the first time, normal FF looks like it was just installed. Including the usual things that get wiped in a refresh (extensions, themes, settings, etc.), all my bookmarks, histories, saved logins and such are…
Ethameshep
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Inside a

When trying to download a video on vevo by inspecting element, I discovered that that was impossible even though the content wasn't DRM protected. The video tag refers to a file that I can't trace or find using ctrl+I (Firefix Dev Edition), while it…
dekzok
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Firefox Dev Edition: shorter XPATH finder

how is it possible to easily obtain short form of XPATH through Inspector? For example, if I try "Copy xpath" on web element I get pretty long response like this: /html/body/div[6]/div[1]/div[1]/p[13] Instead of this or…
YggY
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"Jump to definition" in Firefox DevTools' console jumps to minified JavaScript

I want debug JavaScript in prettify mode using the Firefox Developer Tools, but after clicking on the jump to definition icon, it switches to the default version of the JavaScript and not the prettyfied version. See this…
Baba
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why are all the strings of Netflix's css not valid?

While looking at the code of some sites including Netflix and W3Schools, I noticed something odd: when looking at some elements (by clicking Inspect Element in Firefox Developer Edition), almost all of the CSS rules/strings were crossed out. Why…
dekzok
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php files aren't loaded, due to unknown apache errors

I am using apache to run php files in firefox dev edition but some of them won't work. I guess its because of the following errors that are being shown in console for apache2: [Mon Dec 18 08:57:59.610192 2017] [mpm_prefork:notice] [pid 121]…
dekzok
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How do I make Firefox console group repeat outputs?

I recently switched to Firefox Quantum Developer from Chrome and I notice that duplicate log messages aren't collapsed like they are in Chrome: How would I make this all show as one, like this Edit: It seems that it does this for some outputs but…
user464014
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Any known trick for css svg perspective scene in firefox

Problem I have built a scene that uses SVG and css perspective on the main scene for our company website. This site scrolls sideways not up and down. Firefox has some problems after you reach the end of the scene and come back. Also sometimes when…
Juan Borda
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How to change firefox developer edition inspector background colour

Just started using Firefox Developer Edition and the background colour in Inspector was a lovely black background. Now it's changed to a white colour. Any idea how I can change it back? I'm on an Apple Mac OS Sierra 10.12.6 and using Firefox Dev Ed…
Djuro
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Why is it not possible to define non configurable properties in the global window object?

I get the following error in Firefox 52.0a2 (2017-01-06), when I try to set a non configurable property to the window object. TypeError: Not allowed to define a non-configurable property on the WindowProxy object However it's working in the latest…
Robbendebiene
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Firefox developer edition won't accept cookies

I'm trying to switch over from Firebug to Firefox Developer Edition. I have a website that starts with a login page. The user enters his credentials, these are sent to a perl backend server, which sets a number of cookies with which the user can log…
psgels
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jQuery ajax request failing in firefox developer edition over HTTPS

I have written a javascript which requests a text to my http://localhost/fileread.php and put the response into a textarea in a website with https:// connection (https://translate.google.com/). Since I'm taking some content from http website to a…
Chirag Soni
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Ctrl+Shift+C different behavior in regural Firefox and Firefox developer edition/aurora. Broken?

After pressing ctrl+shift+c in both cases the Inspector tab opens if it's closed. The difference is that in regular Firefox the "Pick an element from the page" is activated while in aurora Firefox it isn't. I thought that the given shortcut is for…
uldo
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Does Firefox developer edition support Legacy addon development now?

It is mentioned that Legacy add-ons are deprecated(here). Though I am trying to make a very minor update to an existing add-on which is working fine on release channel. I installed the add-on in the FF Developer Edition and found some…
Binod Kalathil
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Animation with delay in firefox developer edition weird behavior

I have recently started using Firefox developer edition and i have found a strange behavior on animations with a delay. http://plnkr.co/edit/Tr1nd5r0gAyy3eH3Z7Zh?p=preview .selection-buttons.ng-animate.ng-hide-add { animation: 30s linear 1s…
valepu
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