jquery - How to replace between existing table rows in JavaScript -

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i trying regenerate table new order, problem encounter in performance, have this:

<table> <tr id="row1"></tr> <tr id="row2"></tr> <tr id="row3"></tr> <tr id="row4"></tr> </table>

obviously table more complex, solution performance replacing command target table should like:

   <table id="maintable">     <tr id="row3"></tr>     <tr id="row4"></tr>     <tr id="row1"></tr>     <tr id="row2"></tr>     </table>

when redraw performance bad(for more 100 lines) there way replace rows between without redrawing it? thanks

for rearranging them append them using append() or next() 

$table = $('#maintable');    $table.append($('#row1,#row2', $table));
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>  <table id="maintable">    <tr id="row1">      <td>1</td>    </tr>    <tr id="row2">      <td>2</td>    </tr>    <tr id="row3">      <td>3</td>    </tr>    <tr id="row4">      <td>4</td>    </tr>  </table>


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