AtCoder Zip Copy

AtCoderの問題文中の .zip リンクの横にコピーボタンを追加します。

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.

(У мене вже є менеджер скриптів, дайте мені встановити його!)

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         AtCoder Zip Copy
// @namespace    https://github.com/e6nlaq/atcoder-zip-copy
// @version      1.0.0
// @author       e6nlaq
// @description  AtCoderの問題文中の .zip リンクの横にコピーボタンを追加します。
// @license      MIT
// @copyright    (C) 2026 e6nlaq
// @match        https://atcoder.jp/contests/*/tasks/*
// ==/UserScript==

(function () {
  'use strict';

  function init() {
    const taskStatement = document.getElementById("task-statement");
    if (!taskStatement) return;
    const links = taskStatement.querySelectorAll("a");
    for (const link of links) {
      const url = new URL(link.href, window.location.href);
      if (url.pathname.toLowerCase().endsWith(".zip")) {
        const btn = document.createElement("button");
        btn.type = "button";
        btn.textContent = "Copy";
        btn.className = "btn btn-default btn-sm";
        btn.style.marginLeft = "0.5em";
        btn.style.verticalAlign = "middle";
        btn.addEventListener("click", (e) => {
          e.preventDefault();
          navigator.clipboard.writeText(link.href).then(() => {
            const originalText = btn.textContent;
            btn.textContent = "Copied!";
            setTimeout(() => {
              btn.textContent = originalText;
            }, 1e3);
          });
        });
        link.parentNode?.insertBefore(btn, link.nextSibling);
      }
    }
  }
  init();

})();