JSFiddle - React, Tailwind, and code Playground

HTML

<form>
<input name="text" value="Test"/>
<input name="file" type="file"/>
<button type="button">Test</button>
</form>

JavaScript

document.querySelector("button").addEventListener("click", test);

function test(_event) {
  let formData = new FormData(document.forms[0]);
  console.log(formData);
  let params = new URLSearchParams(formData);
  console.log(params.toString());
}