Copy Scratch comment links

copy-comment.user.js

// ==UserScript==
// @name         Comment IDs
// @version      0.1
// @description  Get Scratch comment IDs
// @author       Kenny2github
// @match        https://scratch.mit.edu/*
// @require      http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @require      https://gist.github.com/raw/2625891/waitForKeyElements.js
// @updateURL    https://gist.githubusercontent.com/Kenny2github/a25dff9c52c90d6f062209df43ef0200/raw/copy-comment.user.js
// ==/UserScript==

function copyText(text) {
  var textArea = document.createElement('textarea');
  textArea.style.position = 'fixed';
  textArea.style.top = 0;
  textArea.style.left = 0;
  textArea.style.width = '2em';
  textArea.style.height = '2em';
  textArea.style.padding = 0;
  textArea.style.border = 'none';
  textArea.style.outline = 'none';
  textArea.style.boxShadow = 'none';
  textArea.style.background = 'transparent';
  textArea.value = text;

  document.body.appendChild(textArea);
  textArea.focus();
  textArea.select();

  try {
    var successful = document.execCommand('copy');
    var msg = successful ? 'successful' : 'unsuccessful';
    console.log('Copying text command was ' + msg);
  } catch (err) {
    console.log('Oops, unable to copy');
  }

  document.body.removeChild(textArea);
}

waitForKeyElements('.comment[id]', function(comment){
    comment = comment.get(0);
    var content = comment.querySelector('.content, .comment-content');
    content.innerHTML += '<hr/>';
    content.innerHTML += '(<a>Comment ID: ' + (comment.dataset.commentId || comment.id.substr(9)) + '</a>&nbsp;';
    content.innerHTML += '|&nbsp;<a onclick="var text = \'' + window.location.origin + window.location.pathname + '#comments-' + (comment.dataset.commentId || comment.id.substr(9)) + '\';' + ('' + copyText).substring(25, 793) + '">Copy Link</a>)';
});