JSFiddle - React, Tailwind, and code Playground

HTML

<select class="selectClass">
    <option>Option 1</option>
    <option>Option 2</option>
</select>
<table>
    <tr>
        <td class="owner">
            <select>
              <option>1</option>
              <option>2</option>
		    </select>
		    <input type="hidden" id = "someid_lkid" value="00590000002BIF7">
		    <input type="hidden" id = "someid_lkold" value="Some Text">
                <!-- there are some more hidden fields -->
          <span class="lookupInput">
		    <input type="text" id = "someid" value="Some Text">
              </span>
        </td>
    </tr>
</table>

JavaScript

$(document).ready(function () {
    $('.selectClass').change(function() {
        $('.owner').each(function(i) {
            $(this).find("input[type='hidden']").each(function(){
               if($(this).attr('id').indexOf("lkid") > -1){
                   $(this).val('new id');
                   alert($(this).val());
               }
               if($(this).attr('id').indexOf("lkold") > -1){
                   $(this).val('new text');
                   alert($(this).val());
               }
                
                
            })
        })
            
    })
})