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Editorial Team
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Asked: 2026-05-11T22:04:41+00:00

I was browsing the source code of some website, and noticed a dll file

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I was browsing the source code of some website, and noticed a dll file being used as the src of a <script>.

(view-source:http://www.yellowbridge.com/onlinelit/baijiaxing.php)

It was something like: <script src="some-dll-file.dll"></script>

Several questions:

  • I didn’t know a <script> could be anything besides js. What else can it be used for?
  • Can you point me in the direction of some more information on this topic? I’ve tried ggoogling around, but realized that I don’t know what I should be googling exactly.
  • Is this cross-platform? I mean if I were to try this on epiphany on an ubuntu box, would it function and serve its purpose?
    I’m on a windows box right now and won’t have access to anything else for a while, so I can’t test it myself.
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1 Answer

  1. Editorial Team

    Only JavaScript can be used as the client-side scripting language (and VBScript too, in IE). The src attribute just specifies some URL, and that URL will return the JavaScript.

    So, the URL http://www.yellowbridge.com/lib/yellowbridge.dll actually does return JavaScript. If you save its contents as a local text file, you can read the script.

    Without knowing anything about the site or its JavaScript, I would guess they are dynamically generating some part of the script file from the DLL.

    Edit: actually, looking at generated JS, I guess it’s dynamically compressing the script on its way to the client.

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