JSFiddle - React, Tailwind, and code Playground

HTML

<input type="file" id="files" multiple>
<div id="out"></div>

JavaScript

var input = document.getElementById('files');
input.addEventListener('change', function() {
    var out = document.getElementById('out');
    out.innerHTML = "Selected files:<br>";
    for( var i = 0 , l = input.files.length ; i<l ; i++ ) {
        out.innerHTML += "&nbsp;&nbsp;&nbsp;" + input.files[i].name + "<br>";
    }
}, false);