DataTable column search

HTML

<script src="//cdn.datatables.net/1.10.7/js/jquery.dataTables.min.js"></script>
<script src="//cdn.datatables.net/plug-ins/1.10.7/integration/bootstrap/3/dataTables.bootstrap.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/plug-ins/1.10.7/integration/bootstrap/3/dataTables.bootstrap.css">
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<div class="container">
    <table id="example" class="table table-striped table-bordered" cellspacing="0" width="100%">
        <thead>
            <tr>
                <th>ID</th>
                <th>Name</th>
                <th>Position</th>
            </tr>
        </thead>
        <tfoot>
            <tr>
                <th>ID</th>
                <th>Name</th>
                <th>Position</th>
            </tr>
        </tfoot>        
        <tbody>
            <tr>
                <td>1</td>
                <td>Tiger Nixon</td>
                <td>System Architect</td>
            </tr>
            <tr>
                <td>2</td>
                <td>Tiger 1 Nixon</td>
                <td>Accountant</td>
            </tr>
            <tr>
                <td>3</td>
                <td>Ashton Cox</td>
                <td>Junior Technical Author</td>
            </tr>
            <tr>
                <td>4</td>
                <td>Cedric Kelly</td>
                <td>Senior Javascript Developer</td>
            </tr>
            <tr>
                <td>5</td>
                <td>Airi Satou</td>
                <td>Accountant</td>
            </tr>
            <tr>
                <td>6</td>
                <td>Brielle Williamson</td>
                <td>Integration Specialist</td>
            </tr>
            <tr>
                <td>7</td>
                <td>Herrod Chandler</td>
                <td>Sales Assistant</td>
            </tr>
            <tr>
               ...

JavaScript

$(function(){

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