title: JQuery val() undefined for textarea with variable selector
body: <p>I can use .text() to get the original text, but updated text isn't being grabbed with the .val() command. Any ideas?</p>
  
  <pre><code>function submitText(subText){ //import submit button id
  var boxID="txtArea_"+subText; //rename so that it is the textArea id
  alert(boxID); //Alerts as the correct id
  alert($("#".boxID).val()); //still undefined
  }
  </code></pre>
  
  <p>HTML is</p>
  
  <pre><code>&lt;textarea id="txtArea_29__KPIs_0" style="width:100%;"&gt;First Comment                 &lt;/textarea&gt;
  </code></pre>
  
  <p>First alert is returning "txtArea_29__KPIs_0", the second is undefined</p>