JSFiddle - React, Tailwind, and code Playground

HTML

<form action="" id="addFav">
     <input type="text" name="name" class="thin-d"/>
     <input type="submit" value="Send"/>
</form>

JavaScript

(function($) {
    $("#addFav").submit(function(event) {
        event.preventDefault();
        alert("hello");
    });
})(jQuery);