Hello,

They are evaluated scripts (introduced by eval(), event handlers, new 
Function("<code>"), ...). They don't have a URL provided, so Firebug assigns 
an arbitrary one 
<https://github.com/firebug/firebug/blob/20b8549fbaedee8c6b9ac0d3230e4475904f9979/extension/content/firebug/debugger/script/sourceTool.js#L171-L173>.
 
In order to assign a meaningful one, the author of the webpage should add a 
"//# sourceURL " statement (see 
http://www.softwareishard.com/blog/firebug/firebug-tip-label-dynamic-scripts-with-sourceurl-directive/
 
).

Florent

On Wednesday, April 29, 2015 at 8:43:56 PM UTC+2, Matthew Pavkov wrote:
>
> In Firebug I see script sources like "http://@conn0.source501";. What are 
> these from? For the same websites, I'll open the Firebox Developer tools 
> and Chrome Developer tools (in Chrome) and I will not see these script 
> sources. These seem to appear on most (perhaps all) websites when using 
> Firebug. I can't determine if these are coming from Firebug or not, but 
> since they only show up in Firebug, it seems to somehow be related.
>
> Example:
> http://dev.website.com/@conn0.source501
>
> The source of that script:
>
> var p;
> if(s == null) return undefined;
> s=((k&&k.hasOwnProperty("$state"))?k:s)["$state"];
> if(s == null) return undefined;
> s=s["current"];
> if(s == null) return undefined;
> s=s["name"];
> return s;
>
>
>
> I've tried turning off addons already. What are these scripts? Where are 
> they from? What are the for?
>

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