create a menu dynamically on button click

Question

I have a table like below , on click of triple dot(...) a menu should be opened on that position only, means create a menu where it is clicked.

<table class="table table-dark">
    <tr>
        <td>sdf</td>
        <td>sdf</td>
        <td>sdf</td>
        <td><a id="btn">...</a></td>
    </tr>
</table>