JSFiddle - React, Tailwind, and code Playground

HTML

<form  method="post" id="simple-example-form">
    <input type="hidden" name="id" />
    <label>
      Name
      <input type="text" name="name" />
    </label>
    <label>
      Age
      <input type="number" name="age" />
    </label>
    <input value="Save" id="submit" type="submit">
</form>

JavaScript

var form = document.getElementById('simple-example-form');
console.log(form.name);