javascript - How to put sequence number in first column in bootgrid table with php server side -

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i tried practice examples on bootgrid command buttons, having trouble when putting sequence number in first column. please me. thank you.

<table id="bootgrid" class="table table-bordered"> <thead>     <tr>         <th>number ?? </th>         <th data-column-id="barcode" data-type="numeric">barcode</th>         <th data-column-id="name_equipment">name eqp</th>         <th data-column-id="commands" data-formatter="commands" data-sortable="false">action</th>     </tr> </thead>    

<script type="text/javascript"> var grid = $("#bootgrid").bootgrid({     ajax: true,     post: function ()     {         return {             id: "b0df282a-0d67-40e5-8558-c9e93b7befed"         };     },     url: "response.php",     formatters: {         "commands": function (column, row)         {             return "<a href=\"edit&code=" + row.barcode + "\" class=\"btn btn-xs btn-warning\"><span class=\"glyphicon glyphicon-pencil\"></span></a> ";         }     } }).on("loaded.rs.jquery.bootgrid", function () {}); $("#clearsearch").on("click", function () {     $("#bootgrid").bootgrid("search"); });


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