userscripts

I was reading GM's wiki to determine the difference between @downloadURL & @updateURL (which I didn't). But what confused me even more that both are unadvised: It is unusual to specify this value. Most scripts should omit it. I'm surprised by that as it's the only way for scripts to auto-update and I don't see why these keys shouldn't be used. The wiki itself is pretty lacking and no other forum sources are advised, so I have to ask here. Also would appreciate more detailed info on these keys. Brock Adams Use of those keys is discouraged mainly by Greasemonkey's lead developer. Most others,

I'd like to use JavaScript to add a search bar for chrome://extensions/ page, so I created a file called test.user.js, and write scripts in it: // ==UserScript== // @name chromeex // @namespace chromeex // @version v1.0 /* @reason * just a test * @end */ // @match chrome://extensions/ // // ==/UserScript== (function(){ alert("haha"); }()); But when I load it in Chrome, it said Invalid header, finally I found out that it's @match chrome://extensions/ that cause the error. Is there a walkaround for this? A Chrome extension won't execute in the chrome://extensions/ directory or on the Chrome Web

I'm going to be as absolutely verbose here as possible as I've run into a few solutions that didn't end up panning out. Please keep in mind that I don't know Javascript . I know basic HTML and CSS. I don't have any actual programming background but I'm trying to learn bit by bit by researching basic tasks like this. Please talk to me like I'm an idiot. Any lingo I throw around in this post I learned while researching this specific issue. I'm writing this userscript as a personal project and to share with some friends. What I'm trying to do. I'm trying to write a userscript for Chrome

// the iframe of the div I need to access var iframe = document.getElementsByTagName("iframe")[2]; var innerDoc = iframe.contentDocument || iframe.contentWindow.document; // resize 'player' in the iframe innerDoc.getElementById('player').width = "1000px"; innerDoc.getElementById('player').height = "650px"; Running in a userscript for this url: http://www.free-tv-video-online.me/player/sockshare.php?id=24DA6EAA2561FD60 Why does Chrome come out with this error and fail the script?: Unsafe JavaScript attempt to access frame with URL http://www.sockshare.com/embed/24DA6EAA2561FD60 from frame with

I am writing a userscript that is injected into a webpage. The script reads some data from a web-server and I want to send messages to a listening application to react to the data. For now, all I'm doing is trying to send a string command to my listening application and see if I can read it. My code worked before it was injected, but afterwards I get an "undefined reference error". I suspect that this has something to do with this "Greasemonkey access violation" . However, I have been unable to find a solution that works. I'm developing in Chrome. Here is the section of code I can't get to

Please see this related question for a background to this: How can I load a shared web worker with a user-script? With that question in mind, I want to explore the possibility (in context of a user-script) of modifying the Shared Worker constructor so that the mechanism responsible for loading the web worker is replaced with the GM function GM_xmlhttpRequest , which works like XMLHttpRequest while ignoring same origin policies. To be clear, I'm writing a user script for Stack Overflow to help automate a certain process for myself and others, and I need to communicate between two open SO tabs,