title: .split is not a function
body: <p>Recently i've updated jQuery / jQuery UI of my php/javascript system with jQGrid free in it's latest version and after implemented the use of jQuery  1.11.3 and jQuery Migrate 1.4.1.</p>
  
  <p>After several bugs fixed got stuck into this (by the way, i've already searched and tried with stackoverflow references of past resolved questions):</p>
  
  <pre><code>var formid = $(".FormGrid");
  var form = $(formid).attr("id").split("-").pop();
  </code></pre>
  
  <p><strong>ERROR</strong>: </p>
  
  <pre><code>$(...).attr(...).split is not a function
  </code></pre>