i didnt get the datatable format in my page : i added datatable for one page. but its should not get the datatable format
        
    <script src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
    <script src="https://cdn.datatables.net/1.10.12/js/dataTables.bootstrap.min.js"></script>
	<table class="example3" id="example1">
							<tr>
								<td></td>
								<td></td>
							</tr>

	</table>

	<script>
	$(document).ready(function() {
		$('.example3').DataTable();
		alert('1234567890');

	} );
	</script>

i got the error like this  i checked both the class and id class 
the are get from the database. if i remove the data also i didnt get the values

TypeError: c is undefined     
	
		...ldren("th, td").each(function(a,b){var c=o.aoColumns[a];if(c.mData===a){var d=s(...

	
please let me know where i done mistake, because same thing i added for other project i work fine 
for this project get error	