JSFiddle - React, Tailwind, and code Playground

HTML

<input id="file" type="file">
<div id="results"></div>

JavaScript

document.getElementById('file').addEventListener('change', function(e) {

    var file = document.getElementById('file').files[0];

    var reader = new FileReader();
    reader.readAsText(file);
    reader.onload = function(e) {
        document.getElementById('results').innerText = reader.result;
    }
});