JavaScript keeps enabling itself

Howdy, for most of the past month I have left JavaScript disabled. A couple of days ago I noticed after a hard reset that it was enabled while browsing pages. I turned it back off and have been using the 4S as I normally would. A few minutes ago I noticed a page loaded some JavaScript so I checked the settings. Somehow it was enabled. Is this normal? Is it a possible bug?

I attempted to find the answers myself via web searches but have not had any luck. Any information would be much appreciated or at least a basic understanding of what is occurring.

 

If I am not following forum guidelines...

...perhaps someone could give me a hint?

I would like an answer to this as the problem implies that at any time javascript could be enabled without prior user knowledge.

Thank you to anyone for any possible assistance.