Questions tagged [firefox]
Mozilla Firefox is a free, open-source cross-platform web browser. Use this tag if your question is related to the inner workings of Firefox or if it relates to code that is not working on Firefox which does work in other browsers. Questions about Firefox add-on development should be tagged [firefox-addon]. If your question is about using Firefox for browsing (i.e. as an end user) you should ask your question on Super User instead.
firefox
38,931
questions
1895
votes
43
answers
2.8m
views
Hide scroll bar, but while still being able to scroll
I want to be able to scroll through the whole page, but without the scrollbar being shown.
In Google Chrome it's:
::-webkit-scrollbar {
display: none;
}
But Mozilla Firefox and Internet ...
- 19.3k
1493
votes
19
answers
2.0m
views
How to manually send HTTP POST requests from Firefox or Chrome browser
I want to test some URLs in a web application I'm working on. For that I would like to manually create HTTP POST requests (meaning I can add whatever parameters I like).
Is there any functionality in ...
- 24.2k
1268
votes
31
answers
836k
views
How can I tell if a DOM element is visible in the current viewport?
Is there an efficient way to tell if a DOM element (in an HTML document) is currently visible (appears in the viewport)?
(The question refers to Firefox.)
- 13.1k
728
votes
14
answers
686k
views
Targeting only Firefox with CSS
Using conditional comments it is easy to target Internet Explorer with browser-specific CSS rules:
<!--[if IE 6]>
...include IE6-specific stylesheet here...
<![endif]-->
Sometimes it is ...
- 41.7k
714
votes
6
answers
224k
views
Difference between DOM parentNode and parentElement
Can somebody explain in simple terms, what is the difference between classical DOM parentNode and newly introduced in Firefox 9 parentElement
- 23.9k
639
votes
37
answers
970k
views
Selenium using Python - Geckodriver executable needs to be in PATH
I am going over Sweigart's Automate the Boring Stuff with Python text. I'm using IDLE and already installed the Selenium module and the Firefox browser.
Whenever I tried to run the webdriver function, ...
- 8,516
524
votes
25
answers
322k
views
How to remove Firefox's dotted outline on BUTTONS as well as links?
I can make Firefox not display the ugly dotted focus outlines on links with this:
a:focus {
outline: none;
}
But how can I do this for <button> tags as well? When I do this:
button:...
- 191k
494
votes
6
answers
959k
views
Is there a <meta> tag to turn off caching in all browsers? [duplicate]
I read that when you don't have access to the web server's headers you can turn off the cache using:
<meta http-equiv="Cache-Control" content="no-store" />
But I also read that this doesn't ...
- 25.8k
433
votes
18
answers
711k
views
Custom CSS Scrollbar for Firefox
I want to customize a scrollbar with CSS.
I use this WebKit CSS code, which works well for Safari and Chrome:
::-webkit-scrollbar {
width: 15px;
height: 15px;
}
::-webkit-scrollbar-track-piece {
...
- 8,024
421
votes
22
answers
816k
views
JavaScript console.log causes error: "Synchronous XMLHttpRequest on the main thread is deprecated..."
I have been adding logs to the console to check the status of different variables without using the Firefox debugger.
However, in many places in which I add a console.log in my main.js file, I ...
- 8,676
416
votes
17
answers
565k
views
Why am I suddenly getting a "Blocked loading mixed active content" issue in Firefox?
This morning, upon upgrading my Firefox browser to the latest version (from 22 to 23), some of the key aspects of my back office (website) stopped working.
Looking at the Firebug log, the following ...
- 18.7k
405
votes
15
answers
603k
views
JavaScript open in a new window, not tab
I have a select box that calls window.open(url) when an item is selected. Firefox will open the page in a new tab by default. However, I would like the page to open in a new window, not a new tab.
...
- 6,642
378
votes
9
answers
569k
views
Get image data URL in JavaScript?
I have a regular HTML page with some images (just regular <img /> HTML tags). I'd like to get their content, base64 encoded preferably, without the need to redownload the image (ie. it's already ...
- 4,172
338
votes
10
answers
444k
views
onchange event on input type=range is not triggering in Firefox while dragging
When I played with <input type="range">, Firefox triggers an onchange event only if we drop the slider to a new position where Chrome and others triggers onchange events while the slider is ...
- 7,202
338
votes
23
answers
348k
views
jQuery $.ajax(), $.post sending "OPTIONS" as REQUEST_METHOD in Firefox
Having trouble with what I thought was a relatively simple jQuery plugin...
The plugin should fetch data from a php script via ajax to add options to a <select>. The ajax request is pretty ...
- 4,557
300
votes
13
answers
178k
views
How can I inspect disappearing element in a browser?
How can I inspect an element which disappears when my mouse moves away?
I don't know its ID, class or anything but want to inspect it.
Solutions I have tried:
Run jQuery selector inside console $('*:...
- 13.4k
295
votes
15
answers
233k
views
'innerText' works in IE, but not in Firefox
I have some JavaScript code that works in IE containing the following:
myElement.innerText = "foo";
However, it seems that the 'innerText' property does not work in Firefox. Is there some Firefox ...
- 190k
290
votes
33
answers
236k
views
How can I prevent the backspace key from navigating back?
On IE I can do this with the (terribly non-standard, but working) jQuery
if ($.browser.msie)
$(document).keydown(function(e) { if (e.keyCode == 8) window.event.keyCode = 0;});
But is it possible ...
- 34.1k
285
votes
10
answers
272k
views
Edit and replay XHR chrome/firefox etc?
I have been looking for a way to alter a XHR request made in my browser and then replay it again.
Say I have a complete POST request done in my browser, and the only thing I want to change is a small ...
- 3,057
265
votes
1
answer
119k
views
What do {curly braces} around javascript variable name mean [duplicate]
EDIT
After looking at JSHint I found this 'destructuring expression' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz) and this however after reading it I still don't ...
- 3,904
255
votes
7
answers
395k
views
How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?
How can I verify my XPath?
I am using Chrome Developers tool to inspect the elements and form my XPath. I verify it using the Chrome plugin XPath Checker, however it does not always give me the ...
- 2,555
249
votes
8
answers
196k
views
Hide Up & Down Arrow Buttons (Spinner) in Input Number - Firefox 29
On Firefox 28, I'm using <input type="number"> works great because it brings up the numerical keyboard on input fields which should only contain numbers.
In Firefox 29, using number inputs ...
- 2,847
239
votes
6
answers
228k
views
Take a full page screenshot with Firefox on the command-line
I'm running Firefox on a Xvfb in a VPS. What I want to do is to take a full page screenshot of the page.
I can redirect Firefox to particular page using
firefox http://google.com
and take a ...
- 15.9k
223
votes
13
answers
99k
views
Cryptic "Script Error." reported in Javascript in Chrome and Firefox
I have a script that detects Javascript errors on my website and sends them to my backend for reporting. It reports the first error encountered, the supposed line number, and the time.
EDIT to ...
- 13.4k
213
votes
18
answers
182k
views
Firefox redirects to https
I'm using Firefox, and while setting up a server, I have been fiddling around with redirects. Now, Firefox has cached a 301 redirect from http://example.com/ to https://example.com/ and from http://...
- 2,243
209
votes
8
answers
58k
views
How to allow keyboard focus of links in Firefox?
Go to this ultra-simple fiddle in a Webkit browser and click on on of the inputs:
http://jsfiddle.net/eK4TT/
<input type="text">
<input type="text">
<input type="text">
<a href="...
- 11.3k
198
votes
30
answers
229k
views
CSS @font-face not working with Firefox, but working with Chrome and IE
The following code works in Google Chrome beta as well as IE 7. However, Firefox seems to have a problem with this. I'm suspecting it to be a problem of how my CSS files are included, cause I know ...
- 7,170
195
votes
11
answers
248k
views
Preventing an image from being draggable or selectable without using JS
Does anyone know of a way to make an image not draggable and not selectable -- at the same time -- in Firefox, without resorting to Javascript? Seems trivial, but here's the issue:
Can be dragged and ...
- 3,239
195
votes
15
answers
363k
views
How to get HTML 5 input type="date" working in Firefox and/or IE 10
I find it odd that input type="date" is still not supported in Firefox after all of this time. In fact, I don't think they added in much (if any) of the HTML 5 new types on an input element. Not ...
- 6,137
194
votes
8
answers
205k
views
How to view/delete local storage in Firefox?
In Google Chrome there is an easy way to see what's in local storage as well as modify or delete it after inspecting it.
Is there a way to do the same in Firefox?
- 9,909
192
votes
10
answers
110k
views
Faster way to develop and test print stylesheets (avoid print preview every time)?
This is my process right now:
Save changes to print.css
Open browser and refresh page.
Right-click and choose Print > Print Preview (Firefox, but any browser really)
It's step 3 that bugs me and I'm ...
- 2,548
190
votes
9
answers
152k
views
Detect all Firefox versions in JS
How to detect Firefox in JavaScript?
I want to detect all versions of Firefox.
- 32k
186
votes
8
answers
86k
views
Breakpoint on property change
Firebug for Firefox has a nice feature, called "Break on property change", where I can mark any property of any object, and it will stop JavaScript execution right before the change.
I'm trying to ...
- 24.8k
186
votes
6
answers
68k
views
Can I prevent the Firefox developer tools network panel from clearing on page reload?
I would like to observe the contents of a POST request whose successful completion results in a location.reload() - when I try to capture this request in the Network Panel of the Firefox developer ...
- 6,244
186
votes
9
answers
374k
views
Disable cross domain web security in Firefox
In Firefox, how do I do the equivalent of --disable-web-security in Chrome. This has been posted a lot, but never a true answer. Most are links to add-ons (some of which don't work in the latest ...
- 32.3k
181
votes
2
answers
88k
views
Secret copy to clipboard JavaScript function in Chrome and Firefox?
Update
Looks like browsers are starting to support copy natively in JS
In the console windows of both Chrome and Firefox on Mac I can execute
copy("party in your clipboard!");
and the text gets ...
- 16.8k
177
votes
21
answers
178k
views
How can I get browser to prompt to save password?
Hey, I'm working on a web app that has a login dialog that works like this:
User clicks "login"
Login form HTML is loaded with AJAX and displayed in DIV on page
User enters user/pass in fields and ...
- 5,184
176
votes
10
answers
451k
views
Can I call jQuery's click() to follow an <a> link if I haven't bound an event handler to it with bind or click already?
I have a timer in my JavaScript which needs to emulate clicking a link to go to another page once the time elapses. To do this I'm using jQuery's click() function. I have used $().trigger() and window....
- 5,839
174
votes
9
answers
69k
views
Does Firefox support position: relative on table elements?
When I try to use position: relative / position: absolute on a <th> or <td> in Firefox it doesn't seem to work.
- 2,632
173
votes
30
answers
299k
views
How to remove the arrow from a select element in Firefox
I'm trying to style a select element using CSS3. I'm getting the results I desire in WebKit (Chrome / Safari), but Firefox isn't playing nicely (I'm not even bothering with IE). I'm using the CSS3 ...
- 6,221
171
votes
16
answers
365k
views
Firefox 'Cross-Origin Request Blocked' despite headers [closed]
I'm trying to make a simple cross-origin request, and Firefox is consistently blocking it with this error:
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote ...
- 3,782
170
votes
6
answers
22k
views
How JavaScript closures are garbage collected
I've logged the following Chrome bug, which has led to many serious and non-obvious memory leaks in my code:
(These results use Chrome Dev Tools' memory profiler, which runs the GC, and then takes a ...
- 80.8k
166
votes
4
answers
136k
views
How to disable paste protection in Mozilla Firefox Developer Console?
I have noticed that in recent versions of Mozilla Firefox there is a super, super annoying bug that disables pastes into the developer console. This has to be the single worst idea ever.
However, I ...
- 4,492
164
votes
11
answers
99k
views
Animate scrollTop not working in firefox
This function works fine. It scrolls the body to a desired container's offset
function scrolear(destino){
var stop = $(destino).offset().top;
var delay = 1000;
$('body').animate({...
- 19.7k
146
votes
17
answers
129k
views
How to turn off caching on Firefox?
During development I have to "clear cache" in Firefox all the time in order to make it use the latest version of JavaScript files.
Is there some kind of setting (about:config) to turn off caching ...
- 260k
145
votes
6
answers
89k
views
How do I write a Firefox Addon? [closed]
What are some resources for getting started writing a Firefox Addon? Is there an API guide somewhere? Is there a getting started tutorial somewhere? Is there a developer discussion board somewhere?
- 13.3k
142
votes
13
answers
103k
views
Amazon S3 CORS (Cross-Origin Resource Sharing) and Firefox cross-domain font loading
There has been a long standing issue with Firefox not loading font from different origin than the current webpage. Usually, the issue arise when the fonts are served on CDNs.
Various solutions has ...
- 4,984
140
votes
29
answers
330k
views
Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms
I have box where I run tests. It seems like Jenkins would ssh in and execute commands described in the specific job that's running.
Here I am trying to run my Selenium Webdriver tests, but it tells ...
- 2,529
139
votes
20
answers
105k
views
Firefox ignores option selected="selected"
If you change a dropdown and refresh the page, Firefox seems to ignore the selected attribute.
<option selected="selected" value="Test">Test</option>
It will in fact ...
- 1,586
139
votes
7
answers
81k
views
How to get result of console.trace() as string in javascript with chrome or firefox?
console.trace() outputs its result on console.
I want to get the results as string and save them to a file.
I don't define names for functions and I also can not get their names with callee.caller....
- 4,701