title: jQuery to filter the result of Ajax call to return column data in an array
body: <p>I have a list of records as a result of an Ajax call:</p>
  
  <pre><code>$data = [{0,name,adress,date, number1},
           {1,name,adress,date, number1},
           {2,name,adress,date, number2},
           {3,name,adress,date, number3}....];
  </code></pre>
  
  <p>I want to filter the unique numbers (number1, number2.....) with date and store them in a list.</p>