JSFiddle - React, Tailwind, and code Playground

HTML

<select url="/Admin/SubCategories" name="TopParentId" id="ParentList">
        <option value="">Please select a parent category</option>
        <option value="1" selected="selected">New Store</option>
        <option value="2">Extensions</option>
        <option value="3">Remodel</option>
        <option value="4">Bespoke Signage</option>
        <option value="5">Tactical Signage</option>
        <option value="6">Size Chart</option>
        <option value="7">Contact Info</option>
    </select>

JavaScript

$(document).ready(function(){
    $("#ParentList").unbind("change");
    $("#ParentList").change(function() {
        var itemId = $(this).val();
        alert(itemId);
        
        
    });
});