JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://code.jquery.com/jquery-3.1.1.min.js"></script>
<a href="#">click</a>
<select name="" id="change">
  <option value="1">1</option>
  <option value="2">2</option>
  <option value="3">3</option>
</select>

JavaScript

$('a').click(function(){
	alert('hello');
});
$('#change').change(function() {
	if ( $('#change option:selected').val() == 1 ){
  	alert('hello');
  }
  else{}
});