title: Javascript Uncaught ReferenceError: parameter is not defined
body: <p>I have some Javascript code:</p>
  
  <pre><code>function addRow(tableID, rowId) {
  var table = document.getElementById(tableID);
  var rowPosition = document.getElementById(rowID).rowIndex;
  //etc.
  }
  </code></pre>
  
  <p>But this throws a Javascript error </p>
  
  <blockquote>
    <p>"Uncaught ReferenceError: rowID is not
    defined"</p>
  </blockquote>
  
  <p>Though looking on Firebug, I can see that the functions receives a correct row identifier, but once the code reaches the second line inside the function the parameter <code>rowID</code> seems unknown.</p>
  
  <p>Can anyone help?</p>