Greasy Fork

Would much appreciate some suggestions or helpful knowledge!

Greetings!

I want to use a script to automatically append a particular parameter to the end of specific but variable URLs. I've found some scripts that seem like they might be useful, such as TimidScript's Linx Amender; however, doing what I want to do seems to be a bit more complex than I initially thought. My knowledge of programming, including JavaScript and its regular expressions, is virtually nil. I thought I might be able to scan through some JS/regex references and piece it together, but I wasn't able to make anything work.

To give you a clearer picture of what I'm trying to do, I'll use YouTube as an example. Here are two random YouTube links:

www.youtube.com/watch?feature=player_detailpage&v=qszpq0Ydv04

www.youtube.com/watch?feature=player_detailpage&v=yFfjUMinFPk

As you're undoubtedly aware, you can append parameters to the end of YouTube URLs to get specific results, such as starting a video at a specific time. Examples in bold:

www.youtube.com/watch?feature=player_detailpage&v=qszpq0Ydv04*#t=XXmYYs*

www.youtube.com/watch?feature=player_detailpage&v=yFfjUMinFPk*#t=XXmYYs*

The point here is that the source (http://www.youtube.com/) is the same for both links, but the information between the source and the appended parameter varies. Can anyone point me in the right direction so that I can automatically add parameters to the end of highly variable but single-source URLs?

Apologies for the long-winded explanation, but thanks so much for your consideration. :)

Shouldn't it be possible with Linx Amender? Anyway here's a simple code that you can start with:

// ==UserScript==
// @name      simple url modifier
// @namespace abc
// @include   *
// @grant     none
// ==/UserScript==

var rules = [
  [/(youtube\.com\/.+?player_detailpage.*)/, '$1#t=00m10s'],
  [/(youtube\.com\/watch.*)/, '$1#t=00m10s'],
  [/another regexp/, 'another replacement']
];

document.addEventListener('click', function(e) {
  var a = e.target;

  //search the parent A element if needed, max 10 levels up the hierarchy
  for (i=10; a.localName != 'a'; i--, a = a.parentNode)
    if (i==0 || !a.parentNode)
      return;

  for (i=0; i<rules.length; i++) {
    if (a.href.match(r = rules[i][0])) {
      a.href = a.href.replace(r, rules[i][1]);
      console.log('Applied url rule '+r);
      return;
    }
  }
});

Shouldn't it be possible with Linx Amender? Anyway here's a simple code that you can start with:...

Yes, I believe it should be possible with Linx Amender, but as I said, I know very little of scripting/programming and was unable to make it do precisely what I wanted to do. If you have a suggestion for making Linx Amender do what I described, I would welcome it. Thanks for the script idea, though! I'll play around with it and see if I can make it work on the sites that I intend to use it with.