JSFiddle - React, Tailwind, and code Playground

HTML

<form action="teste.asp">
    
    <button id="save" type="submit">Salvar</button>
</form>

JavaScript

$( document ).ready(function(){
    $('#save').click(function(){
        var a = confirm("Tem certeza que deseja salvar as alterações?");
        if (!a){
        return false;
        }
        e.preventDefault();
    });
});