JSFiddle - React, Tailwind, and code Playground
HTML
<form id="myForm">
<input name="foo" value="bar"></input>
</form>JavaScript
var x = new FormData(document.getElementById('myForm'));
console.log(x);
var request = new XMLHttpRequest();
request.open("POST", "http://fiddle.jshell.net/submitform.php");
request.send(x);