JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    
    <select name="merchant-category" id="select1">
        <option>1</option>
        <option>2</option>
    </select>
    
    <select name="merchant-category" id="select2">
        <option>1</option>
        <option>2</option>
    </select>

    
</form>

<div id="updates"></div>

JavaScript

$(function() {
    
    $(document).on('change', 'select[name="merchant-category"]', function() {
    
        var notification = $('<p>').text($(this).attr('id') + ' changed!');
        
        $('#updates').append(notification);
        
    });
    
});