Datatables Filter functionality

The working of Datatables Filter functionality

by survivant

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="//cdn.datatables.net/1.10.7/js/jquery.dataTables.min.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/1.10.7/css/jquery.dataTables.css">
<button id="filterButton" class="btn btn-primary">Filter</button>
<table id="example" class="table">
    <thead>
        <tr>
            <th>Name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>Tiger Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
        </tr>
        <tr>
            <td>Garrett Winters</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>63</td>
        </tr>
        <tr>
            <td>Ashton Cox</td>
            <td>Junior Technical Author</td>
            <td>San Francisco</td>
            <td>66</td>
        </tr>
        <tr>
            <td>Cedric Kelly</td>
            <td>Senior Javascript Developer</td>
            <td>Edinburgh</td>
            <td>22</td>
        </tr>
        <tr>
            <td>Airi Satou</td>
            <td>Accountant</td>
            <td>Tokyo</td>
            <td>33</td>
        </tr>
        <tr>
            <td>Brielle Williamson</td>
            <td>Integration Specialist</td>
            <td>New York</td>
            <td>61</td>
        </tr>
        <tr>
            <td>Herrod Chandler</td>
            <td>Sales Assistant</td>
            <td>San Francisco</td>
            <td>59</td>
        </tr>
        <tr>
            <td>Rhona Davidson</td>
            <td>Integration Specialist</td>
            <td>Tokyo</td>
            <td>55</td>
        </tr>
        <tr>
            <td>Colleen Hurst</td>
            <td>Javascript Developer</td>
            <td>San Francisco</td>
            <td>39</td>
        </tr>
        <tr>
            <td>Sonya...

CSS

.btn {
    margin: 20px;
}

JavaScript

$(function () {
    var dataTable = $('#example').DataTable({
        searching: true,
        info: false,
        lengthChange: false,
        "columnDefs": [{
                'targets': 1,
                "visible": false
                }
        ]
    });
    $('#filterButton').on('click', function () {
        dataTable.draw();
    });
});
$.fn.dataTable.ext.search.push(
    function( settings, data, dataIndex ) {
        var target = 'Software Engineer';
        var position = data[1]; // use data for the age column
        if (target === position){
            return true;
        }
        return false;
    }
);