Top "Greasemonkey" questions

OBSOLETE as of Firefox 57.

How can I detect visited and unvisited links on a page?

My aim is to detect the unvisited links on a webpage and then create a greasemonkey script to click on …

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Find and replace in a webpage using javascript

What I want to do is replace all instances of 'foo' in a webpage with 'bar' in a JS bookmarklet/…

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Why is window (and unsafeWindow) not the same from a userscript as from a <script> tag?

I was facing an issue while developing this small userscript. When I wanted to block every XMLHttpRequest from the running …

javascript greasemonkey scope userscripts
How do I change a filename on-download with javascript?

The script adds a download link for videos (on a specific site). How do I change the filename to something …

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Choosing and activating the right controls on an AJAX-driven site

So, I am trying to make it where every time I visit any nike.com sneaker page (without the HTML …

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Replace remote JavaScript file with a local debugging copy using Greasemonkey or userscript

While debugging a client app that uses a Google backend, I have added some debugging versions of the functions and …

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Run Greasemonkey script on the same page, multiple times?

I'm totally new to Greasemonkey, javascript, in fact all the UI stuff. Requirement: Userscript is run by GS once after …

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Adding jQuery UI to Greasemonkey script fails with external CSS file

I'm trying to add jquery-ui to a Greasemonkey script. my full code: test.user.js: // ==UserScript== // @name Test // @namespace rajat.…

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Why isn't my Greasemonkey script updating?

I've got a Greasemonkey script for Firefox. The script includes this meta-block and some lines of code. I want to …

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How to use GM_xmlhttpRequest in Injected Code?

I am writing a userscript that is injected into a webpage. The script reads some data from a web-server and …

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