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Count how many times you visit Narou today.
// ==UserScript==
// @name Narou Counter
// @namespace http://tampermonkey.net/
// @version 0.3
// @description Count how many times you visit Narou today.
// @author beet
// @match https://syosetu.com/user/top/
// @grant none
// ==/UserScript==
(function() {
'use strict';
// alert(document.cookie);
var d = new Date();
var today = d.getMonth() * 100 + d.getDate();
var lastday = Math.max(...(document.cookie.split(';').map(x => x.split("=")[0].trim() == "narou_lastday" ? x.split("=")[1] * 1.0 : 0)));
var count = Math.max(...(document.cookie.split(';').map(x => x.split("=")[0].trim() == "narou_count" ? x.split("=")[1] * 1.0 : 0))) + 1;
if (lastday != today) count = 1;
alert("You visit Narou " + count + " times today!");
document.cookie = "narou_lastday=" + today;
document.cookie = "narou_count=" + count;
var tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 3);
document.cookie = "expires=" + tomorrow.toUTCString();
})();