http://yskwkzhr.blogspot.jp/2017/01/introduction-of-a-bookmarklet-for-oracle-manual-to-switch-language-between-japanese-and-english.html

call_docOraJE-eval-immediate.js

var xhr = new XMLHttpRequest();
xhr.addEventListener('loadend', function(){
  if (xhr.status !== 200) return;
  eval('(function(){'
    + xhr.response.replace(/exit;/g, 'return;')
    + '}())');
});
xhr.open('GET', 'https://raw.githubusercontent.com/inoue-katsumi/misc/master/docOraJE.js');
xhr.send();

call_docOraJE-eval.js

var xhr = new XMLHttpRequest();
xhr.addEventListener('loadend', function(){
  if (xhr.status === 200) eval(xhr.response);
});
xhr.open('GET', 'https://raw.githubusercontent.com/inoue-katsumi/misc/master/docOraJE.js');
xhr.send();

call_docOraJE-githack.js

var script = document.createElement('script');
script.src = 'https://rawcdn.githack.com/inoue-katsumi/misc/master/docOraJE.js';
document.getElementsByTagName('head')[0].appendChild(script)

call_docOraJE.js

var script = document.createElement('script');
script.src = 'https://raw.githubusercontent.com/inoue-katsumi/misc/master/docOraJE.js';
document.getElementsByTagName('head')[0].appendChild(script)