JSFiddle - React, Tailwind, and code Playground

by godhong

HTML

<script src="http://jzaefferer.github.com/jquery-validation/jquery.validate.js"></script>
<form method="post" id="form1" enctype="multipart/form-data" action=index.html>File to upload:
    <input type="file" id="upfile1" name="upfile" class="required"
    accept=".csv" />
    <br>
    <input type="submit" value="Submit">Upload the file!</form>

JavaScript

$(document).ready(function () {
    $("#form1").validate({
        submitHandler: function (form) {
            alert("submitted");
            SubmittingForm();
        },
        rules: {
            upfile: "required"
        }
    });
});