Load jQuery if not present

jqueryFy.js

(function() {

  function init(ownjQuery) {
    var $ = jQuery;
    console.log('jQueryFy');

  }  

  if(typeof jQuery === "undefined") {
    loadScript('//code.jquery.com/jquery.js', function() {
      init(true);
    });
  }else{
    init(false);
  }

  function loadScript(u, c) {
    var d = document,
        o = d.createElement('script');
        o.src = u;
    if (c) { o.addEventListener('load', function (e) { c(null, e); }, false); }
    d.getElementsByTagName('head')[0].appendChild(o);
  }

})();