ChromeのBookmarkでクリップボードにコピーする ref: http://qiita.com/songfei1983/items/281654a983604e18d842

file0.js

javascript:(function(){
  var copyFrom = document.createElement("textarea");
  copyFrom.textContent = 'copy!';
  var bodyElm = document.getElementsByTagName("body")[0];
  bodyElm.appendChild(copyFrom);
  copyFrom.select();
  var retVal = document.execCommand('copy');
  bodyElm.removeChild(copyFrom);
  return retVal;
})();

file1.js

javascript:(function(){var copyFrom = document.createElement("textarea");copyFrom.textContent = 'LGTM';var bodyElm = document.getElementsByTagName("body")[0];bodyElm.appendChild(copyFrom);copyFrom.select();var retVal = document.execCommand('copy');bodyElm.removeChild(copyFrom);return retVal;})();