Hacker News Contextual Comments (sticky tree)

Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding.

Tính đến 02-06-2021. Xem phiên bản mới nhất.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Hacker News Contextual Comments (sticky tree)
// @version      0.1
// @description  Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding.
// @author       phil294
// @match        https://news.ycombinator.com/item?id=*
// @icon         https://www.google.com/s2/favicons?domain=ycombinator.com
// @grant        GM_addStyle
// @namespace https://greasyfork.org/users/779094
// ==/UserScript==

GM_addStyle(`
tr.comtr {
	position: sticky;
	display: block;
	background: #f6f6ef;
	min-height: 40px;
	cursor: pointer;
}
tr.comtr.noshow {
	display: none;
}`)

const sticky_row_height = 40
let i_zindex = 0

for(const com of document.querySelectorAll('tr.comtr')) {
	const nesting_level = com.querySelector('.ind > img').width / 40
	com.style.top = nesting_level * sticky_row_height
	com.style.zindex = ++i_zindex
	com.onclick = async () => {
		com.querySelector('a.togg').click()
		com.style.position = 'static'
		com.scrollIntoView({block: "start", inline: "nearest", behavior: "smooth"})
		com.style.position = 'sticky'
	}
}