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By and large, Firefox should run JavaScript just fine. We'll check a few settings that might be causing the problem.

My operating system is Windows 7. Foxfire browser, Gmail cannot find JavaScript in Foxfire. I have JavaScript turned on in Foxfire. I've been unable to find any solution.

In this excerpt from Answercast #51, I look at some common causes of JavaScript failing in the Firefox browser.


One thing I want to be very clear about here and I actually see this mistake being made often. The browser is not Foxfire. The browser is "Firefox."

It's very important that we call tools and things by their proper name so that when you are searching for solutions on the internet, you actually find the proper solutions for the tools that you're using.

So, remember that. It's important. The browser is called Firefox, not Foxfire.

Check JavaScript settings

Now, there are two things that I'm going to have you do.

I believe you already did this, but in Tools in Options, there are ways to turn JavaScript off.

Clearly, that's one thing that you apparently have done. I'll have you double check it - to make sure that in "Options" in Firefox - JavaScripting, in general, is enabled.

NoScript extension

The other thing and this actually surprises me sometimes when it happens, but there is an extension, a highly regarded extension, that sometimes people install without realizing what it does. It's the "NoScript extension."

What that does is it actually turns off JavaScript on a site-by-site basis.

Now, the interesting thing is - when you go to a site like, you may have NoScript set to allow scripting on "" But what you don't realize is that, after you login (or at some point in the process), the actual URL changes to be something like ""

NoScript sees that as a separate site that requires a separate exception for scripting.

So, if you have NoScript installed, then make sure that it is set to allow scripting on the domains on which you are currently having a problem. That means looking at the URL

Look in the address bar

NoScript is so easy to use... it actually means:

  • When you're on the page that is causing you a problem;

  • Go ahead and right-click on the NoScript icon;

  • And tell it to allow exceptions on this particular URL (which is usually going to be either or, but it may be something else, so definitely pay attention to what NoScript is telling you.)

But those are the two things that come to mind. By and large, Firefox should run JavaScript just fine.

Clean installation

The final piece of advice I have is that if none of the above applies to you at all, one of the things that I would certainly do is uninstall Firefox and reinstall.

Actually, download and reinstall the latest copy of Firefox, simply to make sure that everything is reset to its proper initial state.

Another browser

And I suppose a last ditch effort is to say, you know what? If you can't get Firefox to work, download Google Chrome.

I can guarantee you Google Chrome works great with Gmail and is a perfectly fine browser that in recent years, I've taken to using in lieu of Firefox.

Article C5788 - September 8, 2012 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

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