JSFiddle - React, Tailwind, and code Playground

HTML

<form enctype="text/plain">
    <input type="text" name="banana" value="swag">
</form>

JavaScript

var form = document.querySelector('form'),
    formData = new FormData(form),
    req = new XMLHttpRequest();

console.log(formData)
req.open("POST", "/echo/html/")
req.send(formData);