JSFiddle - React, Tailwind, and code Playground

HTML

<form action="https://posttestserver.com/post.php">
<select name="select">
<option disabled>value</option>
</select>
    <input type="submit"/>
</form>
    
When you submit the form, you will se what browser really sends...

JavaScript

alert("jquery serializes form as: " + $('form').serialize());
alert("value of select: " + $('select').val());