CodeMirror подключаем по class а не по id

<section class="pattern">
      <textarea class='codemirror'>
    <script>
 $(function(){
     var tAreas = document.querySelectorAll('.codemirror');
        for (var i = 0; i < tAreas.length; i++) {
           CodeMirror.fromTextArea(tAreas[i], {  mode: "application/x-httpd-php",
        tabMode: 'indent',
 lineNumbers: true,
        autoCloseTags: true,
    styleActiveLine: true,
    matchBrackets: true });
        }
 });
  </script>
      </textarea>
   <textarea class='codemirror' >
           var myModule = function(){
              //code goes here
           }
      </textarea>
 </section>