JSFiddle - React, Tailwind, and code Playground

by skram

HTML

<select id="selectOpt">
   <option value="a">a</option>
   <option value="b">b</option>
   <option value="c">c</option>
</select>

<input type="textbox" id="txtbox1" />

<button id="sch">Select</button>

JavaScript

$(function () {
    $('#sch').on('click', function () {
         var txtVal = $('#txtbox1').val();
 
         if ($('#selectOpt option[value=' + txtVal + ']').length > 0) {
            $('#selectOpt').val(txtVal );
         }
    });
});