JSFiddle - React, Tailwind, and code Playground

HTML

<input id="test" type="hidden" value="hidden element" />
<input id="test1" value="visible element" />

JavaScript

$('#test').val("newVal");
$('#test1').val("newVal");

console.log($('#test').val());
console.log($('#test1').val());
//console.log("__________________________________");
console.log($('#test').attr("value"));
console.log($('#test1').attr("value"));