Bookmarklet To Extend Tweet Menu

gistfile1.js

$("ul.tweet-actions").each(function(index){
  $(this).prepend('<li><a role="button" class="my-custom-link" class="js-tooltip" href="#"><b>My Option</b></a></li>');
});

$(".my-custom-link").click(function(evt){
  evt.preventDefault();
  var el = $(evt.target) || $(evt.srcElement);
  var tweetText = el.closest(".content").find("p.tweet-text").first().text();
  alert("This is the text from the tweet that you can use for something:\n\n" + tweetText);
});