A userscript that adds a button for easily reposting a link from the subreddit frontpage

reddit-repost-button.user.js

// ==UserScript==
// @name        Reddit Repost Button
// @namespace   http://nkmathew.net
// @author      nkmathew
// @description Adds a button for easily reposting a link from the sub frontpage
// @icon        http://www.reddit.com/favicon.ico
// @icon64      http://www.reddit.com/favicon.ico
// @version     0.1.0
// @include     /^https?:\/\/(.+\.)?reddit\.com\/?.*$/
// @require     http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js
// @run-at      document-end
// @grant       GM_getValue
// @grant       GM_setValue
// ==/UserScript==

(function() {
  window.addEventListener('load', function() {
    var href, link;
    $('.entry .title a.title').each(function(_, val) {
      href = val.href;
      if (href.indexOf('https://www.reddit.com/r/') === 0) {
        href = href.replace('https://www.reddit.com/', 'https://np.reddit.com/');
      }
      link = `
        <li title="Repost this link">
          <a href="#" class="reddit-repost" data-href="${href}">
          repost
          </a>
        </li>
      `;
      $(val.parentNode.parentNode).find('.flat-list').append(link);
    });
    $('.reddit-repost').click(function(event) {
      var href = $(this).data('href');
      event.preventDefault();
      href = encodeURIComponent(href);
      href = 'https://www.reddit.com/submit?url=' + href;
      window.open(href, '_blank');
    });
  }, false);
})();