JSFiddle - React, Tailwind, and code Playground

HTML

<select name="page">
<option value="page1" title="Page1">Page1</option>
<option value="page2" title="Page2">Page2</option>
<option value="page3" title="page3" selected>Page3</option>
<option value="page4" title="Page4">Page4</option>
</select>


<input type="text" value="" id="pageno" />

JavaScript

$(document).ready(function() {
    $('#pageno').val($('select[name="page"]').val());
});