title: How to use javascript in p:confirm message attribute
body: <p>I'm migrating a project from primefaces 4 to 6.1.</p>
  
  <p>I've come across this snippet</p>
  
  <pre><code>&lt;p:confirm message="Really delete user \''+getOtherCellTextInSameRow(this,'userName')+'\'?"
             header="Confirmation"
             icon="ui-icon-alert" /&gt;
  </code></pre>
  
  <p>The message in the resultant confirmation dialog appears exactly as above. The javascript method <code>getOtherCellTextInSameRow</code> is no longer being executed. How do I fix this? I think I'm asking how do you inject client side javascript into an attribute?</p>
  
  <p>Note, closest I have found is to use EL but I don't wish to do that. I simply want to concatenate the output of the method.</p>