// ==UserScript==
// @name        HN highlight fresh comments
// @description Highlights fresh comments on Hacker News.
// @version     1
// @namespace   https://greasyfork.org/en/scripts/6955-hacker-fresh
// @include     http://news.ycombinator.com/*
// @include     https://news.ycombinator.com/*
// @grant       GM_addStyle
// ==/UserScript==
GM_addStyle(".fresh-item { background-color: #FEE67F; border-radius: 3px; }");
(function() {
'use strict';
function get_comment_id(vote_box) {
var item_link_ele = vote_box.parentElement.querySelector('.comhead > a:nth-child(2)');
// Check for deleted comment
if (item_link_ele === null) {
return null;
}
var link = new URL(item_link_ele.href);
return link.searchParams.get('id');
}
var all_vote_box = document.querySelectorAll('tbody > tr > td[valign=top]');
for (var e of all_vote_box) {
e.classList.add("vote-box");
var item_id = get_comment_id(e);
if (item_id !== null) {
var status = localStorage.getItem(item_id);
if (status === null) {
e.classList.add("fresh-item");
localStorage.setItem(item_id, "seen");
}
}
}
})();