Data-table print

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/jspdf/0.9.0rc1/jspdf.min.js"></script>
<link rel="stylesheet" href="https://cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css">
<script src="https://code.jquery.com/jquery-1.12.3.js"></script>
<script src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf-autotable/2.0.16/jspdf.plugin.autotable.js"></script>
<button id="cmd">generate PDF</button>
<div id="content">
  <table id="example" class="display" cellspacing="0" width="100%">
    <thead>
      <tr>
        <th>Name</th>
        <th>Position</th>
        <th>Office</th>
        <th>Age</th>
        <th>Start date</th>
        <th>Salary</th>
      </tr>
    </thead>
    <tfoot>
      <tr>
        <th>Name</th>
        <th>Position</th>
        <th>Office</th>
        <th>Age</th>
        <th>Start date</th>
        <th>Salary</th>
      </tr>
    </tfoot>
    <tbody>
      <tr>
        <td>Tiger Nixon</td>
        <td>System Architect</td>
        <td>Edinburgh</td>
        <td>61</td>
        <td>2011/04/25</td>
        <td>$320,800</td>
      </tr>
      <tr>
        <td>Garrett Winters</td>
        <td>Accountant</td>
        <td>Tokyo</td>
        <td>63</td>
        <td>2011/07/25</td>
        <td>$170,750</td>
      </tr>
      <tr>
        <td>Ashton Cox</td>
        <td>Junior Technical Author</td>
        <td>San Francisco</td>
        <td>66</td>
        <td>2009/01/12</td>
        <td>$86,000</td>
      </tr>
      <tr>
        <td>Cedric Kelly</td>
        <td>Senior Javascript Developer</td>
        <td>Edinburgh</td>
        <td>22</td>
        <td>2012/03/29</td>
        <td>$433,060</td>
      </tr>
      <tr>
        <td>Airi Satou</td>
        <td>Accountant</td>
        <td>Tokyo</td>
        <td>33</td>
        <td>2008/11/28</td>
        <td>$162,700</td>
      </tr>
      <tr>
        <td>Brielle Williamson</td>
        <td>Integration Specialist</td>
  ...

JavaScript

var table = $('#example').DataTable();

var columns = ["Name", "Position", "Office", "Age", "Start date", "Salary"];
var rows = [];
var table_data = table.rows().data();

for(var i = 0; i < table_data.length; i++){    
    rows.push(table_data[i]);
}

var doc = new jsPDF('p', 'pt');
doc.autoTable(columns, rows);
console.log(rows);


$('#cmd').click(function() {
  doc.save('table.pdf');
});