table sorter / Jan - Dec

Please help, my table is still sorting a-z, I would like to sort Jan - Dec

my parser:

$.tablesorter.addParser({
    id: 'monthYear',
    is: function(s) {
        return false;
    },
    format: function(s) {
        var date = s.match(/^(\w{3})[ ](\d{4})$/);
        var m = date ? date[1] + ' 1 ' || '' : '';
        var y = date && date[2] ? date[2] || '' : '';
        return new Date(m + y).getTime() || '';
    },
    type: 'Numeric'
});

my call:

$('table.tablesorter').tablesorter({
    headers: {
        0: {
            sorter: 'monthYear'
        }
    }
});

my table:

<table class="company-ultracheck-summary table table-striped tablesorter">
<thead class="thead-dark">
<tr>
<th class="header headerSortDown" scope="col">Month / Year</th>
<th class="header" scope="col">Checks</th>
<th class="header" scope="col">Unique vehicles checked</th>
<th class="header"> </th>
</tr>
</thead>
<tbody>
<tr>
<td>Apr 2018</td>
<td>254</td>
<td>46</td>
<td><span data-show="unique_20184" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Aug 2018</td>
<td>635</td>
<td>81</td>
<td><span data-show="unique_20188" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Dec 2018</td>
<td>915</td>
<td>127</td>
<td><span data-show="unique_201812" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Feb 2019</td>
<td>1385</td>
<td>148</td>
<td><span data-show="unique_20192" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Jan 2019</td>
<td>1272</td>
<td>138</td>
<td><span data-show="unique_20191" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Jul 2018</td>
<td>429</td>
<td>64</td>
<td><span data-show="unique_20187" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Jun 2018</td>
<td>478</td>
<td>54</td>
<td><span data-show="unique_20186" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Mar 2018</td>
<td>8</td>
<td>1</td>
<td><span data-show="unique_20183" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Mar 2019</td>
<td>262</td>
<td>105</td>
<td><span data-show="unique_20193" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>May 2018</td>
<td>425</td>
<td>52</td>
<td><span data-show="unique_20185" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Nov 2018</td>
<td>1125</td>
<td>121</td>
<td><span data-show="unique_201811" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Oct 2018</td>
<td>1068</td>
<td>113</td>
<td><span data-show="unique_201810" class="oi oi-list pointer month-summary-check"></span></td>
</tr><tr>
<td>Sep 2018</td>
<td>762</td>
<td>98</td>
<td><span data-show="unique_20189" class="oi oi-list pointer month-summary-check"></span></td>
</tr></tbody>
</table>

Topic Participants
john.mbiddulph
jakecigar

table sorter / Jan - Dec

table sorter / Jan - Dec

Topic Participants

john.mbiddulph

jakecigar