Inject jQuery onto page bookmarklet

inject-jquery.js

javascript: (function(url) {
  var script = document.createElement("script");
  script.setAttribute("src", url);
  script.addEventListener('load', function() {
    var script = document.createElement("script");
    document.body.appendChild(script);
    console.log('jQuery injected');
  }, false);
  document.body.appendChild(script);
})('//code.jquery.com/jquery-latest.min.js')