JSFiddle - React, Tailwind, and code Playground

HTML

<select class="input_panel" id="Acntname" > 
<option value="0">Select</option>
<option value="1">Equity Share Capital</option>
<option value="2">Deprication Fund</option>  </select>

<input type="text" class="input_panel" id="accountname" />

JavaScript

function showState(str){ 
   //  alert(str);
   $('#Acntname option[value="'+str+'"]').prop('selected',true);
}
$('#accountname').on('keyup',function(){
  showState(this.value);
});