Question

YouTube has broken its functionality to be able to remove videos I’ve seen and am subscribed to.

Now I want to implement such behavior myself using a GreaseMonkey script.

I’m still left without one problem, which is: How to identify whether I already clicked on a video?

• Can I simply remove all video boxes that contain a visited link (They are Purple)?
  _{This didn’t work previous time I tried. Did I perhaps do something wrong?}

• Should I rewrite the a tag so it calls my script and uses local storage?

• Is there a more easy method to do this?

Answer 1

1. Firefox (assuming using the Greasemonkey plugin) has nerfed the ability to see what links have been visited, because it violated the privacy of the end user. Source.

2. localStorage is definitely an option.

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Update by Tom Wijsman:

$(function() {
    $('div#feed h4 a').each(function(index){
        var id = $(this).attr('href').split('v=')[1].split('&')[0];

        $(this).click(function () {
            var id = $(this).attr('href').split('v=')[1].split('&')[0];
            localStorage.setItem('YT#' + id, '1');
        });

        if (localStorage.getItem('YT#' + id) == '1')
        {
            $(this).parent().parent().parent().parent().parent().parent().parent().remove();
        }
    });
});