title: compare two columns using datatables
body: <p>My goal is to highlight a row if two columns contain the same string within a row using datatables
  I am not sure how would I compare two columns. I want to do something like this.
  This is part of my code</p>
  
  <pre><code>  "columnDefs":[
    {
        "targets":[3,4], 
        "render": function ( data, type, full, meta ) { 
         if value of 3 = 4 {
           //highlight the row
         }
        }
     } ],
  </code></pre>
  
  <p>Thanks in advance.</p>