GitHub Issue Link for Markdown

gh_issue_link.js

// ==UserScript==
// @name         GitHub Issue Link for Markdown
// @version      0.1
// @author       QUANON
// @match        https://github.com/*/*/issues/*
// @grant        none
// ==/UserScript==

(() => {
  'use strict';

  const repositryName = document.querySelector('h1.public').textContent.trim();
  const issueNo = document.querySelector('.gh-header-number').textContent.trim();
  const issueTitle = document.querySelector('.js-issue-title').textContent.trim();
  const url = window.location.href;

  const input = document.createElement('input');

  input.setAttribute('type', 'text');
  input.setAttribute('value', `[${repositryName} » Issue ${issueNo} » ${issueTitle}](${url})`);
  input.setAttribute('readonly', true);
  input.setAttribute('style', 'width: 100%; margin-bottom: 15px;');
  input.addEventListener('click', () => {
    input.select();
  }, false);

  document
    .getElementById('partial-discussion-header')
    .appendChild(input);
})();