Firefox 25.0.1 and Facebook have JavaScript issues

I am using Firefox 25.0.1 with Mac IOS 10.9 on my Macbook Air. When trying to get to Facebook, I am told that I have to enable JavaScript in my browser or go to the mobile site. I am given no instructions on enabling JavaScript, nor can I find JavaScript in my settings or add-ons. Safari does not have this issue, but I'd prefer to use Firefox. Unfortunately, a web search of this issue does not bring me any results. Is it just me?

Firefox has a general on/off setting for JavaScript. If it was off, lots of sites would be giving you the same message. Since it's only on Facebook, I think something else might be the culprit here.
Your post didn't include any information on your add-ons, so I'll give some general advice.
'''Removing obsolete/conflicting/corrupted stored data'''
When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.
(1) Bypass Firefox's Cache
Use Command+Shift+r to reload the page fresh from the server.
Alternately, you also can clear Firefox's cache completely using:
Firefox menu > Preferences > Advanced
On the Network mini-tab > Cached Web Content : "Clear Now"
If you have a large hard drive, this might take a few minutes.
(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:
* right-click and choose View Page Info > Security > "View Cookies"
* Tools menu > Page Info > Security > "View Cookies"
* click the padlock or globe icon in the address bar > More Information > "View Cookies"
In the dialog that opens, you can remove the site's cookies individually.
Then try reloading the page. Does that help?
'''Testing for an extension conflict'''
Firefox's Safe Mode is a standard diagnostic tool to bypass interference by extensions (and some custom settings). More info: [[Troubleshoot Firefox issues using Safe Mode]].
You can restart Firefox in Safe Mode using
Help > Restart with Add-ons Disabled ''(Flash will still work)''
In the dialog, click "Start in Safe Mode" (''not'' Reset)
Does Facebook work any better?

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