--------------------------------------------- <script> const $output = document.getElementById('output') document.getElementById('file').onchange = function() { var file = this.files[0]; var reader = new FileReader(); reader.onload = function(progressEvent) { // Entire file const text = this.result; $output.innerText = text // By lines var lines = text.split('\n'); for (var line = 0; line < lines.length; line++) { console.log(lines[line]); } }; reader.readAsText(file); };</script> <input type="file" name="file" id="file"> <div id='output'> ...</div> (Source: https://stackoverflow.com/questions/23331546/how-to-use-javascript-to-read-local-text-file-and-read-line-by-line ) </plaintext>