JSFiddle - React, Tailwind, and code Playground

HTML

<form>
    <input id="name" />
    <input type="submit" value="submit" />
</form>

JavaScript

$('form').submit(function(e){
    e.preventDefault();
    var data = {};
    data.name = $('#name').val();
    $(window).trigger('modify_name', data);
    $('#name').val(data.name);
});

$(window).on('modify_name', function(e, data){
    data.name = 'MR. ' + data.name;
});