Inject jquery and lodash into current page

jquery-lodash-injector.js

javascript: (function () {  var jv = '2.1.4';  var lv = '3.9.3';  var el = document.createElement('pre'),    b = document.getElementsByTagName('body')[0],    otherjQuery = false,    msg = '',    libs = [      function loadjQuery() {        if (typeof jQuery != 'undefined') {          showMsg('This page already using jQuery v' + jQuery.fn.jquery);        } else {          if (typeof $ == 'function') {            otherjQuery = true;          }          getScript('//cdnjs.cloudflare.com/ajax/libs/jquery/' + jv + '/jquery.js', function () {            if (typeof jQuery == 'undefined') {              showMsg('Sorry, but jQuery wasn\'t able to load')            } else {              showMsg('This page is now jQuerified with v' + jQuery.fn.jquery + otherjQuery ? ' and noConflict(). Use $jq(), not $().' : '');            }          });        }      },      function loadLodash() {        if (typeof _ != 'undefined') {          showMsg('This page already using lodash v' + _.VERSION);        }        getScript('//cdnjs.cloudflare.com/ajax/libs/lodash.js/' + lv + '/lodash.min.js', function () {          showMsg('This page is now has lodash');        });      }    ];  el.style.position = 'fixed';  el.style.top = '0';  el.style.padding = '5px 10px';  el.style.zIndex = 9001;  el.style.fontSize = '12px';  el.style.color = '#222';  el.style.backgroundColor = '#f99';  function getScript(url, success) {    var script = document.createElement('script');    script.src = url;    var head = document.getElementsByTagName('head')[0],      done = false;    script.onload = script.onreadystatechange = function () {      if (!done && (!this.readyState || this.readyState == 'loaded' || this.readyState == 'complete')) {        done = true;        success();        script.onload = script.onreadystatechange = null;        head.removeChild(script);      }    };    head.appendChild(script);  }  function showMsg(msg) {    if (!document.body.contains(el)) {      b.appendChild(el);    }    el.appendChild(document.createTextNode(msg + '\n'));    window.setTimeout(function () {      if (typeof jQuery == 'undefined') {        b.removeChild(el);      } else {        jQuery(el).fadeOut('slow', function () {          jQuery(this).remove();        });        if (otherjQuery) {          $jq = jQuery.noConflict();        }      }    }, 2500);  }  libs.forEach(function (init) {    init();  })})();