Firefox

Mozilla Firefox is a free, open-source cross-platform web browser

Opera

Opera is a series of web browsers developed by Opera Software AS



Worse faster framerates

Example

"The problem with this code is that it doesn t quite work on firefox and works even worse on opera"

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Dynamic width floated div with nested floated blocks

"It seems to be slower in google-chrome and firefox but is significantly faster in opera"

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How to convert decimal to hexadecimal in JavaScript

"For example i ve read that opera and ie will fix framerates slower than firefox"

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Animated *.gif framerate is too high

Others

Example

Second safari has the greatest standards support combined with a marketshare which isn t negligible opera is just hard to justify for cost benefit reasons;third in my experience going from safari to firefox is usually less problematic than the other way around

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What percentage of marketshare does a browser need for your support?

I added a hidden text field which worked in firefox but not opera;opera forgets the hidden field values but not text field ones so i wrapped the text field in a display none div which remembers the value ok but javascript fires before the formfield has its value updated by the opera browser

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Jquery SlideToggle presist state after browser back button

While firefox showed no difference between the two;strangely though opera did get a much higher score across the board

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How do I bind context to event handler so event and a few more arguments passed to handler function

But if firebug donâ t enabled after launch firefox â time equal 2ms that faster than opera and google-chrome and difference between empty filled array disappears

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Appealing to non-exists element of array, reduces the performance very much

In opera it goes little bit lower than in firefox

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Button text position differs from browser

If the columns should be uniform using the multicolumn module might be a better way to go and this will only work in google-chrome opera and ie10 firefox has better browser support

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Css flexbox break parent by screen width

Opera also doesn t support mp4 and i can t find evidence that they will use the os s decoder if available;regarding firefox mp4 is not usually supported

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Trouble with playing/displaying MP4 Video

Many modern browsers google-chrome firefox opera allows user to edit page on the fly so many modern browsers google-chrome firefox opera can easily remove the maxlength attribute

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In my specific PHP app, what else can I do against XSS vulnerabilities?

Update under linux gentoo amd64 it s the same - opera reneders slightly larger fonts than firefox but nothing that looks odd

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GWT default style IE font size

For example in the classic browser share example if the firefox is at 45 i want to be rendered inside the pie distance -40 may be and where the slice is less such as opera at 6 - i want it to be shown outside with a connector

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Highcharts pie dynamic label inside and outside for each slice

Firefox just provides far more access to its own internals and system to the extensions so its technically possible to do more with them than with opera widgets or google-chrome extensions

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Comparison of tools offered by different browsers for web developers?

You can add same for few more browsers ie opera safari... to be sure that script will run on users machine;script will not run if firefox is not preinstalled

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Py2app selenium without firefox install

For some reason edge google-chrome and opera were able to ignore maybe that old version of jquery address while keeping jquery javascript to work normally;but mozilla firefox did not behave in the same way and jquery javascript was not working at all in mozilla firefox

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Firefox doesn't fire $(document).ready(function() {

Download firefox messages wether i be using ie8 partner build firefox 3.1 beta 2 or another browser like opera safari

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Is Web Browser "Discrimination" Okay?

Only firefox and opera seem to have this issue opera even worse than firefox but i don t care that much about opera

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Change underline-color of child-elements in FF and Opera (works in IE, Safari and Chrome)

Firefox also has a limit of 50 cookies per domain;opera is lower at 30 cookies

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Php setcookies function limiation

Basically safari google-chrome opera is used in mobile devices and device features works fine with these;firefox browser is not a better option for mobile devices

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Google map Api Share location issue in Firefox

On your screenshot div width in opera is bigger than in firefox and google-chrome

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Content overflow in display:inline-block; why and how?

Firefox has even fewer as far as i know and opera has none

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Select menu option border none

Well if you take a look at this statistic it shows that opera is getting more known and popular since 2002 maby not that fast but it still growing;i m one of the people who used to use opera before and it has some realy nice features but since the people who used to use opera before got bigger it not as fast as before but it supports the maskerading to firefox and ie

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Necessary to support Opera?

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