                <a href="https://caniuse.com/customevent">CustomEvent</a>, <a href="https://caniuse.com/mdn-api_formdata">FormData</a>, and the <a href="https://caniuse.com/element-closest">Element.closest</a> API.
                </li>
                <li>
                    It's also safe to use <a href="https://caniuse.com/es6-module">JavaScript Modules</a>, <a href="https://caniuse.com/es6">ECMAScript 6 / 2015</a>, 
                    <a href="https://caniuse.com/async-functions,object-values,object-e