title: Dynamically adding and deleting rows in jquery datatable
body: <p>In the jquery datatable I am adding rows dynamically while clicking on a button. But While adding a new row then it should automatically delete if there is a similar row existing in the table.</p>
  
  <p>Suppose in the datatable I have following data.</p>
  
  <p>Row1 : A B C D
  Row2 : P Q R S
  Row3 : U V W X</p>
  
  <p>Now I am going to add a new one like below. </p>
  
  <p>Row4 : P Q R S</p>
  
  <p>But this new one is already there in the datatable so this existing one should be deleted automatically while adding this new one. You may think why we need to add the same one again. Because , though it looks like same one in the table, it is different in database.</p>
  
  <p>Can some one help me achieve this requirement.</p>