JSFiddle - React, Tailwind, and code Playground

HTML

<table>
          <tr  id="TEST1" >
              <td align="left" valign="middle"><div align="right">Contact</div></td>
              <td colspan="4" align="left" valign="middle">
              <input type="text" id="contact1" size="20" />  Number 
              <input type="text" id="number1" size="20" /> 
              </td>
              <td>
              <input type="button"  value="Button 1" id="contact1" /></td>
          </tr>


          <tr id="TEST2" >
              <td align="left" valign="middle"><div align="right">Contact</div></td>
              <td colspan="4" align="left" valign="middle">
              <input type="text" id="contact2" size="20" />  Number 
              <input type="text" id="number2" size="20" /> 
              </td>
              <td>
              <input type="button"  value="Button 1"  id="contact2" />
              </td> 
          </tr>

          <tr id="TEST3" >
              <td align="left" valign="middle"><div align="right">Contact</div></td>
              <td colspan="4" align="left" valign="middle">
              <input type="text" id="contact3" size="20" />  Number 
              <input type="text" id="number3" size="20" /> 
              </td>
              <td>
              <input type="button"  value="Button 1"  id="contact2" />
              </td> 
    </tr>
</table>

JavaScript

$(function() {

          $('input[type=button]' ).click(function() {
              var bid, trid; // Declare variables if you don't use var 
                             // you will bind bid and trid 
                             // to the window, since you make them global variables.
              bid = (this.id) ; // button ID 
              trid = $(this).closest('tr').attr('id'); // table row ID 
              alert(trid);
          });
    });