JSFiddle - React, Tailwind, and code Playground

HTML

<table>
<tr>
<td>name</TD><TD></TD><TD></td>
<td align="center">
<form method="POST" id="myform">
<input type="hidden" value="1" id="IdOtd" name="IdOtd"></td>
<td><input type="button" class="ViewButton" value="press">
</form>
</td>
</TR>
    <tr>
<td>name</TD><TD></TD><TD></td>
<td align="center">
<form method="POST" id="myform">
<input type="hidden" value="2" id="IdOtd" name="IdOtd"></td>
<td><input type="button" class="ViewButton" value="press">
</form>
</td>
</TR>
</table>

JavaScript

$(document).ready(function(){
    $(".ViewButton").click(function() {        
        var num = $(this).parent().prev().children().children("[type=hidden]").val();
       // $(this).val(num);
        alert(num);        
    });
});