Hi! I want to save my HTML form to a certain file in my computer. and whenever I click on submit, I want the file to get updated. and later I want to fetch the file data group wise. is this possible by using JS, AJAX, JSON only?

This is my local html file . <aside id="sidebar"> <div class="dark"> <h3> Get a Quote</h3> <form class="quote" id="contactForm" method="POST" action="/contact"> <div> <label>Name</label><br> <input type="text" name="Name" id=...