JSFiddle - React, Tailwind, and code Playground

HTML

<input type="file" class="fileElem pull-right" id="chooseFile" multiple onchange="handleFiles(this.files)">
<ul id="anUL"></ul>

JavaScript

function handleFiles(files) {
    console.log(files);
    var list = [].slice.call(files).map(function (file) {
        return '<li>' + file.name + '</li>';
    }).join('');

    document.getElementById('anUL').innerHTML = list;
}