JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/themes/dot-luv/jquery-ui.css">
<form>
  <input type="text" id="cars" name="cars"/>
</form>
<button>test</button>

JavaScript

$("button").click(function() {
    alert($("#cars").val);
});