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Add a bell emoji to unread comments on HackerNews
// Can be used with https://github.com/xcv58/Custom-JavaScript-for-Websites-2
// This snippet is released under the terms of the CC0 license: https://creativecommons.org/publicdomain/zero/1.0/deed.en
const cache_key = 'hn_comments_views'
const cache = JSON.parse(localStorage.getItem(cache_key) || '{}')
document.querySelectorAll('.athing.comtr').forEach(comm => {
if (!cache[comm.id]) {
const span = document.createElement('span')
span.innerHTML = '🔔' // :bell: emoji
comm.querySelector('.comhead').append(span)
}
cache[comm.id] = true
})
localStorage.setItem(cache_key, JSON.stringify(cache))
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