Marking comments as read on HN, the hacky way

remove-as-read.js

// these are to be pasted into the console
// remove by clicking on the up arrow
// the useful thing is that you remove comments and add the removed id to
// an array, so next time you know exactly what you've considered
// (use case might be monthly "Who is hiring?")

function remove(id) { 
  document.getElementById(id).parentElement.parentElement.parentElement.parentElement.parentElement.parentElement.parentElement.remove(); 
}
[].forEach.call(
  document.getElementsByTagName("a"), 
  function(item) { 
    item.onclick = function(e) { 
      e.preventDefault();
      var ids = localStorage.getItem('ids').split(',');
      ids.push(item.id);
      localStorage.setItem('ids', ids.toString());
      remove(item.id);
    } 
  }
);
localStorage.getItem('ids').split(',').forEach(remove);

Bug: comments on comments remain, but I don't really care, for my use case is fine as it is.