JSFiddle - React, Tailwind, and code Playground

by Leonardo Centoventotto

HTML

<select id="selectbox">
   <option value="1">1</option>
   <option value="2">2</option>
   <option value="3">3</option>
</select>


<input id="first-textbox" type="text" readonly>
<input id="second-textbox" type="text">

JavaScript

$('#selectbox').on('change', function() {
    $("#first-textbox").val($(this).val()).trigger('keyup');
});

$('#first-textbox').on('keyup', function() {
    $("#second-textbox").val($(this).val());
});