time until JOI

TwitterにJOI開始までの残り時間を表示します

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

Bạn sẽ cần cài đặt một tiện ích mở rộng như Tampermonkey hoặc Violentmonkey để cài đặt kịch bản này.

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        time until JOI
// @description TwitterにJOI開始までの残り時間を表示します
// @version     1.0
// @author      euglenese
// @match       https://twitter.com/*
// @namespace https://greasyfork.org/users/201019
// ==/UserScript==

function len2(text){ // become 2 digits
	return ("00" + text).slice(-2)
}

var item = $("<li>");
var item_a = $("<a>");
item_a.attr("href", "https://joi2019-yo.contest.atcoder.jp/");
item_a.attr("target", "_blank");
item_a.css("font-size", "15px");
item.append(item_a);
var item_a_span = $("<span>");
item_a_span.addClass("text");
item_a.append(item_a_span);
$("#global-actions").append(item);
var text, date, hour, min, sec;
time_update();
setInterval(time_update, 100);

function time_update(){
	text = "";
	date = new Date();
	hour = date.getHours();
	min = date.getMinutes();
	sec = date.getSeconds();
	if( date.getFullYear() > 2018 ||
	   	date.getDate() > 9 ||
	   	hour >= 16){
		text = "終了しました";
	}else if(hour >= 13){
		text = "開催中です!";
	}else{
		text = "あと " + len2(12 - hour) + ":" + len2(59 - min) + ":" + len2(59 - sec);
	}
	item_a_span.html(text)
}