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Editorial Team
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Asked: 2026-05-25T13:53:55+00:00

I am looking for a way to prevent loading a specific JavaScript file on

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I am looking for a way to prevent loading a specific JavaScript file on a website for any website of choice, with Firefox.

For example:
Say I don’t want to load jQuery (when loading the page, not afterwards ‘disabling’ it). I then want to be able to set that

http://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js

should not be loaded. The browser should complete ignore this to debug other JavaScript on the website. I don’t have access to the domain directly, so that is why I am trying to do this via the browser.

So for clarity: 🙂 I don’t want to disable scripts from a certain domain, but want to be able to disable certain scripts. It can be that 10 scripts are on 1 domain, so killing all 10 of them is not what I want; in that case I want to prevent loading only one.

Is there a way to do so?

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1 Answer

  1. Editorial Team

    Several options:

    1. Use the Addon “Adblock Plus”. It will probably still accesses the js but does not execute it.

    2. Use the Addon “Greasemonkey”, which – when cofigured right – does not even touch the js-url. But its generally harder to configure right. 😉

    3. Have a look at Firefox’s buildin security policies: http://kb.mozillazine.org/Security_Policies Here you can block javascript on an url or even function-level

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