JSFiddle - React, Tailwind, and code Playground

HTML

<form action="" method="POST">
    <input type="button" value="addmore" onClick="addRow('dataTable')" />
    <table id="dataTable" class="TFtable" border="1">
        <tr>
            <td>
                <label>Name 1:</label>
                <input type="text" required="required" name="name1" />
            </td>
            <td>
                <label>File 1:</label>
                <input type="file" name="file1" />
            </td>
        </tr>
    </table>
    <input class="submit" type="submit" value="Confirm &raquo;" />
</form>

JavaScript

var nextName = 2;

    function addRow(tableID) {
        var table = document.getElementById(tableID);
        var rowCount = table.rows.length;
        if (rowCount < 20) { // limit the user from creating fields more than your limits
            var row = table.insertRow(rowCount);
            var colCount = table.rows[0].cells.length;
            for (var i = 0; i < colCount; i++) {
                var newcell = row.insertCell(i);
                newcell.innerHTML = '<label>Name ' + nextName + ':</label>' +
                    '<input type="text" required="required" name="name' + nextName + '" />';
                newcell.innerHTML = '<input type="file" name="file' + nextName + '" />';
                nextName++;
            }
        } else {
            alert("Maximum Passenger per ticket is 20.");

        }
    }

    function deleteRow(tableID) {
        var table = document.getElementById(tableID);
        var rowCount = table.rows.length;
        for (var i = 0; i < rowCount; i++) {
            var row = table.rows[i];
            var chkbox = row.cells[0].childNodes[0];
            if (null != chkbox && true == chkbox.checked) {
                if (rowCount <= 1) { // limit the user from removing all the fields
                    alert("Cannot Remove all the Passenger.");
                    break;
                }
                table.deleteRow(i);
                rowCount--;
                i--;
            }
        }
    }