add unread mark for **visited** post of v2ex.com
// ==UserScript==
// @name v2ex unread
// @name:zh-CN v2ex 标记未读 新回复
// @namespace https://github.com/axipo/v2exUnread
// @version 0.3
// @description add unread mark for **visited** post of v2ex.com
// @description:zh-CN 给v2ex增加未读标记的油猴脚本
// @author axipo
// @match https://*.v2ex.com/*
// @grant none
// ==/UserScript==
(function() {
'use strict';
if(location.pathname === '/' || location.pathname === '/my/topics'){
// read visit log
let containers = document.querySelectorAll("#Main .topic_info");
containers = Array.prototype.slice.apply(containers);
let links = document.querySelectorAll("#Main .topic-link");
links = Array.prototype.slice.apply(links);
let replies = links.map(link => /#reply(\d+)/.exec(link.href)[1]);
let postIds = links.map(link => /\/t\/([0-9]+)/.exec(link.href)[1]);
containers.forEach((container, index) => {
if(!replies[index]){
return
}
let oldReply = localStorage.getItem('post' + postIds[index])
oldReply = parseInt(oldReply ? oldReply : 0)
if(!oldReply){
return
}
let recentReply = replies[index] - oldReply
if(!recentReply){
return
}
let span = document.createElement('span')
span.innerText = recentReply + ' new'
span.style = `
margin: 0 0.5rem;
color: white;
background-color: #f56c6c;
padding: 0px 6px;
border-radius: 6px / 50%;
font-weight: bold;
`
container.appendChild(span)
})
return
}
var regRes = /\/t\/([0-9]+)$/.exec(location.pathname);
if(regRes){
let postId = regRes[1]
let text = document.querySelector("#Main > .box:nth-child(4) > .cell:nth-child(1)").innerText;
let recentReply = /(\d+) 条回复/.exec(text)[1];
localStorage.setItem('post' + postId, recentReply);
}
})();